United were 2-0 up and cruising in yesterday's Premiership clash when Gus flicked home Stephane Dalmat's cutback to make it 2-1 after 63 minutes.
That paved the way for us to dictate the tempo of the last third of the game but we only really carved out one chance - Robbie Keane couldn't quite wrap his foot around Dalmat's clever pass.
"It is very difficult to play against Manchester United, especially when you are 2-0 down," reflected Gus. "It's tough.
"Just look at what happened here two years ago when we were 3-0 up at half-time - you can still lose.
"I think the game was too slow for us at the start. United keep possession very well so we tried to get behind the ball and build from our box.
"Everyone was lifted by the goal and we were suddenly thinking we could get a second. We just needed the right ball, the right cross or the right shot.
"We're disappointed with the result, disappointed with the position we're in but if we continue like that, we'll be okay. The next game is very important."
That game is at Portsmouth on Boxing Day.
Gus Poyet is convinced things will soon be looking up again if we pick up where we left off in the last half-hour against Manchester United.