I don't think there was intent to target the head and I think Anderson lowering his head caused the impact to the jaw, but if the "principal point of contact" is the head, don't they have to give him something? If the league intends to condition players to back off these kinds of hits, you have to punish these. And let's be honest, if Anderson didn't return we'd be very afraid of a suspension here. If we all agree that judging actions by results (blood for high stick, for example) is f*&^ing stupid, then this should be too.
I say he gets a game here and I think that's probably fair. Tack on that the Canadian media is predictably crying about this since it's Boston, and I think pressure mounts.