Nevertheless, the NFL prohibits (and fines) all helmet-to-helmet contact for a reason....
The hit on Boom was definitely a cheap shot for two reasons: (1) the defender (Valai) was not trying to make a play, he was trying to take out a player, and (2) it was a deliberate crown-to-chin hit - he should have been thrown out of the game, not named player of the game by the ABC/ESPN crew. Of course, Valai comes back later and lays out Sanzenbacher with another helmet-to-helmet shot - at least on that occasion, he was trying to make a play.
But hey, did we really expect Wisky to play a clean game, at home at night, after getting embarrassed by Michigan the week before?