More evidence that competitors on the ground are trying as hard as they can to break arms and that the only thing that saves the opponent is realizing he's in a no win situation and needs to tap and what happens when he (or she) doesn't tap in time.
http://www.youtube.com/watch?v=DFDm9rrQl_A
http://www.youtube.com/watch?v=dXkVCwCBfyM
http://www.liveleak.com/view?i=3bc_1208613792