Kilmarnock manager Lee Clark criticised defender Conrad Balatoni after his error led to Killie’s defeat at Inverness.
Balatoni underhit a pass back to Killie goalkeeper Jamie MacDonald, who brought down Ross Draper in his bid to get to the ball and was sent off.
Greg Tansey scored from the spot and further goals from Draper and Danny Williams secured the points for Caley Thistle, cancelling out Kallum Higginbotham’s opener.
The defeat leaves Killie facing an uphill battle to get out of the relegation play-off spot.
“We got ourselves into a great position and threw it away,” said Clark.
Asked if Balatoni had said anything after the match, Clark replied: “There’s nothing he can say because it’s something that’s been talked about.
“Hopefully he learns but if you keep making the same errors then you have to change the personnel. We talked about it at half-time, it was unnecessary to pass the ball back to the keeper because of where he was on the pitch.
“It wasn’t as if he was facing the keeper, he should have clipped it up to the striker and turned the Inverness back four.
“It has a knock-on effect as well, Jamie has been the best goalkeeper in the league this season so it’s a double blow that he’ll be banned now. The red card and the penalty changed the game because there was nothing between the teams.”
The win for Inverness virtually ends their worries of being dragged into the rele-gation mix, putting 11 points between them and Killie.
Inverness manager John Hughes said: “This result takes us clear but we want to finish the season well and win all our remaining games.”