The going to ground thing is so over exaggerated.
Going to ground is his way of defending we all know that... He gets skinned going to ground no more than any top defender gets turned inside out while they are still stood on their feet. It just looks a bit worse being on your arse, (he gets up ridiculously quick by the way).
Maybe I'm a little biased as he is probably my favourite player in the whole squad as he plays the game exactly how I do! He's exciting for a centre half!
He may get up ridiculously quickly but it's no good when it's 20 yards behind the play.