Smallings clash of heads was not cut and dry, I think a bit of the dark arts were at play there. If you can see a replay of the head clash you'll know what I mean. Smalling has no intention of playing the ball, he knows exactly what he's doing headbutt to the soft part (the side part) of the head.
This used to go on a lot in time's gone by. Anyway he goes down faking his head injury then gets up walks over to big nose and said something to him slyly c**ts all of them, it's either the flying elbow or the flying head no punishment guaranteed.