Anyone else notice how Herb Dean went rushing in when Chris dropped Sam with that head kick? It did look like he went out for a second, but fortunately he recovered before Dean was potentially able to step in. If Herb had been a little closer, we may have gotten an early stoppage there.
I think almost any ref would. I don't think I have ever seen anyone recover when they fell face first with their hands at their sides like that. Sam is a tough dude.