There's contact, but it's still a ridiculous dive. Probably a penalty, but I hate players who fall over theatrically. I know they all do it, but it drives me mad. Giving a foul but still booking players for diving may be a solution?
Also, I didn't like the way the Man Utd players surrounded the referee who was trying to make a decision. Take rugby's approach - only captains can speak to the ref, and any backchat is an immediate yellow.
But their title is well deserved, I can't deny that. So it all pans out nicely in the end!