The Killybegs man was a substitute and was brought on to give his team some bite as the Merseyside club were locked at 1-1 with Liverpool dominating.
And he soon made his presence felt, closing down the Reds players at every opportunity.
He was however booked.
And four minutes of time he was lucky to stay on the pitch as he clattered Steven Gerrard on the edge of the box.
From the resulting 86th minute free kick, Craig Bellamy whipped in a cross for Liverpool’s Andy Carroll to head home the winner and put Liverpool through to next month’s final against Chelsea.
Today the former St Catherine’s and Sligo Rovers player took to twitter to apologise to Everton fans.
Coleman tweeted: “Really bad decision by me to give the free kick away. I apologise to all the fans who made there way to wembley! Sorry.”