Inverness boss Terry Butcher hailed the impact of Adam Rooney after the forward fired the winner against St Mirren.
As a match that was described by Butcher as "brutal" looked to be heading for a 0-0 draw, substitute Rooney blasted home on 85 minutes.
"Obviously Adam Rooney made a massive difference," said Butcher. "He had a hat-trick of misses, he scored with probably his most difficult chance.
"Twenty goals this year in all competitions so he's had a great year."
The Highlanders had been reduced to 10 men before Rooney's decisive strike, Russell Duncan sent off after a tussle with Lee Mair.
"Russell's been grabbed by the throat by the centre-half and I think it was a case of handbags, really, from both players but the referee's produced a red card," said Butcher.
The result dented St Mirren's battle to avoid relegation but Butcher insists Inverness will play with the same determination in their final games against Hibernian and bottom club Hamilton.
"Forty-seven points and still six to play for, we want to break 50," added Butcher.
"We want to finish off in style. It's been an incredible season, we've covered a lot of ground.
"We've done what we had to do and what we wanted to do. We obviously wanted to make an impact in this SPL, which I think we've done.
"We want six points from these two matches and we don't care about anybody else.
"We want to finish with a bang."