The Dons moved to within four points of Premiership leaders Celtic with a 1-0 victory over United but McInnes was furious about a first-half incident.
Graeme Shinnie was booked for simulation in the build-up to an own-goal from Paul Dixon – perhaps the first case of a goal being disallowed for simulation.
The blunder by referee Bobby Madden comes only a couple of weeks after Willie Collum made some bewildering decisions in the Dons' defeat to Inverness.
It was all too much for McInnes who was sent to the stands by Madden but afterwards he apologised to the officials – however he says that he has not changed his opinion about the decision.
McInnes said: "I think I was wrong and I think the referee was wrong. I spoke to Bobby [Madden] and the officials and apologised.
“I have seen it again. How I felt at the time is how I feel now. I thought the goal should have stood.
"My player gets booked for simulation which, for me, was clearly not the case.”
“It was a bad call and thankfully we don’t have to dwell on it too much.
"But if we get that second goal then we would have had a real stranglehold of the game, it becomes less nervy and we would go on and make more of that. It was a lifeline for United at that stage."
Source: Scotsman