The problem there is that refs are wary of making the incorrect call because someone dove.
See the slash on Thornton.
Or see the call on Sedin in OT for an example of the refs desperately not wanting to be wrong. Saw an injury, made an awful call.
What I wonder is, would they have made that call if Gryba hadn't just made a hit and injured someone and caused a big media storm a few days before?
There was a penalty on that play but not necessarily the call that was made. I watched the replay of the game on NHL network and the play that is in question could have had 2 infractions called,. First was boarding that was called or you could've called Sedin for interference. Wingel brought the puck in and Sedin knocked the puck off his stick. WHILE they both pursued the loose puck Sedin body-checked Wingel without possession of the puck. Thus the interference penalty.