As others have said the ref gave the red card based on what he saw at the speed and time of the incident. It was not a knee jerk reaction as he had thinking time before he showed the card. Having watched it in slow motion and real time both a few times, I think the ref was correct to issue a red.
My assumption on Jose's comments regarding the best team losing, I suspect that this was an attempt at a subtle sarcastic comment, it was not a compliment and Jose does not do. Good old Jose always worth listening to
Finally, the behaviour of the MU players at the end typified the spoilt nature and lack of sportsmanship that prevails in modern day football, as always it is a shame that professional footballers cannot adopt the model set by Rugby Union player. Mind you I think the Turkish ref would be quite a good union ref!