Turning attention to Leroy Lita, Coppell played down the incident that earned Lita a yellow card and an immediate substitution to save him from a red card.
Lita was shown a yellow card following an off-the-ball incident with Dons' Sean O'Hanlon, and Steve decided to replace him with Kevin Doyle, rather than risk another card and subsequent suspension.
Steve said, "Leroy felt he got a clip on the face when he was down, he reacted but it was nothing, a nothing incident.
"Given the new guidelines, the referee had to book him. I can't risk a sending off at this stage, and while I was very very confident he wouldn't get involved in anything in the second half, why even risk it?
"It would be a three-game ban, why bother bringing that cloud over your head? It was a non-issue, just common sense to bring him off.
"I've got players wanting to play, enough players on the bench. It was nothing."