The performance was absolutely disgusting in any case. Worst we've played for a long time and it probably shows how bad that United side were that we still scored 2 goals and could have snatched a point. By far the worst United side I've seen.
We effectively played with 10 men for most of it:
"Against United, Walcott was atrocious. No shots, no chances created and six passes completed in 63 minutes. He touched the ball 17 times and managed to lose possession on ten occasions. It would be hard to do worse deliberately." - F365