Watched it again. Still think it was dirty by Eric Smith.
The Oregon guy blocks him a slightly late, but there is absolutely no excuse for Smith to jump up and attempt to knee him/kick him in the butt/back. Just a stupid decision.
Regardless of whether you believe it was a dirty hit or not, I don't want anybody on the team that has been arrested twice for violence against other people. Especially if one of them was a girl. Domestic violence is pretty high on my list of absolute non-negotiable issues.