There was a replay shown on the American broadcast toward the end of the game that made me question the offside, and I was confsed when the announcers were saying that the headbutt shouldn't have been played on the Jumbotrons in the arena. If something happens that's illegal, why shouldn't they call it, if they notice it on the screen? I understand when you're not on neutral ground there could be favoritism, but here there shouldn't hve been an issue. This wasn't a push or something small, this was a nasty headbutt, I'd be disappointed if he didn't get a card.