Gueye, 37, was shown a straight red card for violent conduct after just 13 minutes for slapping Everton teammate Michael Keane.
Thankfully for him, Dewsbury-Hall was on hand to score the winner for Everton as they secured a memorable win at Old Trafford.
Speaking after the game, the midfielder revealed that Gueye apologised to the rest of the team at half time.
"It was just a moment of madness,” he said.
“It was obviously avoidable. All I can say is Idrissa apologised to us all at half-time and said his piece. That's all he can do and we move on from it.
"The reaction from the lads after it was unbelievable, top tier. We could've easily crumbled, gone in on ourselves and lost the game comfortably, but it probably made us grow even more as a team.
"The manager just said he would deal with the situation another time and it was just about keeping to the plan that we had. He just wanted us to continue what we were doing and focus on the things we can change."