Bury stunned Scunthorpe with a fine second-half comeback in an impressive victory at Glanford Park.
Shane Duffy gave the Iron an early lead, touching in Michael O'Connor's free-kick, while team-mate Andy Barcham was denied by Cameron Belford.
But Peter Sweeney fired the leveller from 20 yards and Bury took control.
Andy Bishop put the Shakers 2-1 ahead after good work by Mike Jones and Efe Sodje's header added a third to leave Scunthorpe in the drop zone.
VIEWS FROM THE DRESSING ROOM
Scunthorpe manager Alan Knill told BBC Radio Humberside:
"I thought we were excellent first half and pretty poor second half but poor decisions have cost us.
"That's football isn't it. You can see goals but it's what you do about it and the second goal was the one that killed us.
"We stepped forward first half and played in their half but in the second half we stepped backwards. We've never told anybody to step backwards but that's what we tend to do."
Bury manager Richie Barker told BBC Radio Manchester:
"We were extremely fortunate to only get to half-time at 1-0 down, but then in the second-half I thought we were fantastic.
"We had a couple of scares to be fair but I thought as the game went on we just became the better side.
"He (Alan Knill) signed most of the players that were here when I got here, so I think it was a little bit strange as for one or two of them it may be the first time they've played against an ex-manager.
Full Time The referee blows his whistle to end the game.
90:00 +3:10 Booking
Booking The referee shows Lenell John-Lewis a yellow card for dissent.
Shaun Harrad concedes a free kick for a foul on Andrew Wright. Direct free kick taken by Sam Johnstone.
Peter Sweeney takes a shot. Sam Johnstone makes a save. Short corner taken by Peter Sweeney from the left by-line.
90:00 +0:30 Substitution
Substitution Mike Jones leaves the field to be replaced by Shaun Harrad.
Free kick awarded for an unfair challenge on Mike Jones by Andrew Wright.
Unfair challenge on Eddie Nolan by David Worrall results in a free kick. Sam Johnstone takes the direct free kick.
Mike Jones is flagged offside by the assistant referee. Michael O'Connor restarts play with the free kick.
Steven Schumacher takes a shot. Save by Sam Johnstone. Steven Schumacher decides to take the corner short.
The ball is sent over by Andrew Wright, Jordan Robertson takes a shot. Ashley Eastham gets a block in.
Substitution David Amoo goes off and David Worrall comes on.
Substitution Garry Thompson is brought on as a substitute for Andy Barcham.
Substitution Mark Duffy joins the action as a substitute, replacing Sam Togwell.
81:42 Goal scored
Goal! - Efetobore Sodje - Scunthorpe 1 - 3 Bury Efetobore Sodje scores a headed goal from inside the six-yard box. Scunthorpe 1-3 Bury.
Corner taken left-footed by Peter Sweeney from the right by-line to the near post,
Lenell John-Lewis challenges Eddie Nolan unfairly and gives away a free kick. Direct free kick taken by Eddie Nolan. Corner taken by Michael O'Connor from the left by-line played to the near post, clearance made by Mark Hughes.
Niall Canavan fouled by David Amoo, the ref awards a free kick. Jimmy Ryan takes the direct free kick.
Substitution Bobby Grant leaves the field to be replaced by Chris Dagnall.
Mike Jones gives away a free kick for an unfair challenge on Bobby Grant. Bobby Grant produces a shot on goal direct from the free kick.
Substitution Lenell John-Lewis comes on in place of Andy Bishop.
Andy Bishop challenges Niall Canavan unfairly and gives away a free kick. Direct free kick taken by Sam Johnstone.
Jimmy Ryan fouled by Andy Bishop, the ref awards a free kick. Free kick taken by Eddie Nolan.
The assist for the goal came from Mike Jones.
68:23 Goal scored
Goal! - Andy Bishop - Scunthorpe 1 - 2 Bury Goal scored by Andy Bishop from deep inside the penalty box low into the middle of the goal. Scunthorpe 1-2 Bury.
Booking Andy Bishop booked.
David Amoo fouled by Jimmy Ryan, the ref awards a free kick. Peter Sweeney crosses the ball from the free kick left-footed from right wing, save made by Sam Johnstone.
Shot from just outside the box by Bobby Grant goes over the crossbar.
The ball is delivered by Phil Picken, save by Sam Johnstone.
David Amoo takes a shot. Eddie Nolan gets a block in. Corner taken by Steven Schumacher played to the near post, Michael O'Connor makes a clearance.
The assistant referee flags for offside against Andy Bishop. Niall Canavan restarts play with the free kick.
Corner from the right by-line taken by Michael O'Connor, Mark Hughes manages to make a clearance.
Ashley Eastham fouled by Andy Barcham, the ref awards a free kick. Free kick taken by Cameron Belford.
Sam Johnstone takes the direct free kick.
Booking Peter Sweeney receives a yellow card for unsporting behaviour.
Foul by Peter Sweeney on Jimmy Ryan, free kick awarded.
Strike comes in from Steven Schumacher from the free kick.
Booking Eddie Nolan booked for unsporting behaviour.
Eddie Nolan gives away a free kick for an unfair challenge on David Amoo.
Unfair challenge on Mike Jones by Sam Togwell results in a free kick. Cameron Belford takes the direct free kick.
Peter Sweeney produces a drilled left-footed shot from 25 yards. Niall Canavan gets a block in.
Efetobore Sodje concedes a free kick for a foul on Jordan Robertson. The free kick is swung in right-footed by Michael O'Connor, save made by Cameron Belford. Corner taken right-footed by Michael O'Connor from the left by-line, Steven Schumacher makes a clearance.
Mike Jones provided the assist for the goal.
49:39 Goal scored
Goal! - Peter Sweeney - Scunthorpe 1 - 1 Bury Free kick scored by Peter Sweeney. Scunthorpe 1-1 Bury.
Sam Togwell gives away a free kick for an unfair challenge on David Amoo.
Effort on goal by Mike Jones from a long way out goes over the bar.
The referee starts the second half.
45:00 +2:35 Half time
Half Time It is the end of the first-half.
The offside flag is raised against Mike Jones. Free kick taken by Sam Johnstone.
Free kick awarded for a foul by Michael O'Connor on Steven Schumacher. Cameron Belford takes the direct free kick.
Inswinging corner taken by Peter Sweeney.
Unfair challenge on Jordan Robertson by Mark Hughes results in a free kick. Sam Togwell crosses the ball in from the free kick, Cameron Belford makes a save.
Jordan Robertson produces a cross, clearance made by Ashley Eastham. Corner taken by Michael O'Connor.
David Amoo concedes a free kick for a foul on Jimmy Ryan. Free kick crossed by Michael O'Connor, Cameron Belford makes a save.
Corner taken by Michael O'Connor.
Eddie Nolan produces a cross, Michael O'Connor takes a shot.
Free kick awarded for a foul by Bobby Grant on Phil Picken. Cameron Belford restarts play with the free kick.
Bobby Grant crosses the ball, Ashley Eastham makes a clearance.
The ball is swung over by Andrew Wright, clearance by Mark Hughes.
Booking Phil Picken is booked.
Bobby Grant produces a left-footed shot from long range that goes over the bar.
Andy Bishop challenges Shane Duffy unfairly and gives away a free kick. Shane Duffy takes the free kick.
Andy Barcham takes a shot. Cameron Belford makes a save. Shot from just outside the box by Jimmy Ryan goes over the bar.
Foul by Jordan Robertson on Cameron Belford, free kick awarded. Direct free kick taken by Cameron Belford.
Booking Jordan Robertson receives a caution.
A cross is delivered by Andy Barcham, save made by Cameron Belford.
The ball is delivered by David Amoo, save by Sam Johnstone.
Direct free kick taken by Ashley Eastham.
Booking Sam Togwell is cautioned by the ref for unsporting behaviour.
Mark Carrington fouled by Sam Togwell, the ref awards a free kick.
David Amoo produces a cross, clearance by Andrew Wright.
David Amoo challenges Niall Canavan unfairly and gives away a free kick. Sam Johnstone takes the free kick.
Shot by Andy Bishop. Save made by Sam Johnstone.
Shot by Michael O'Connor. Ashley Eastham gets a block in. Outswinging corner taken from the right by-line by Michael O'Connor.
Booking Steven Schumacher goes into the referee's book for dissent.
The assist for the goal came from Michael O'Connor.
4:37 Goal scored
Goal! - Shane Duffy - Scunthorpe 1 - 0 Bury Shane Duffy finds the back of the net with a headed goal from inside the six-yard box. Scunthorpe 1-0 Bury.
Efetobore Sodje concedes a free kick for a foul on Bobby Grant. Centre by Michael O'Connor,
Peter Sweeney produces a cross.
Free kick awarded for a foul by Bobby Grant on David Amoo. The free kick is delivered left-footed by Mark Carrington from right wing.
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