The SFA have agreed that the red card was not merited and so the big striker will not be suspended or have the points added to his disciplinary record, which is good news.
It is apparently the second time in recent months that this particular referee, Steve Conroy, has had a red card overturned. Anywhere else this sort of incompetence would mean some sort of punishment or penalty, however in Scotland he probably gets told to keep his chin up before being handed the next Old Firm game!
Story source: The Official St. Mirren Website