What's the rule on charging? I thought it was you don't stop skating? I mean he was going full speed, but did stop striding a far distance from Evans. Is there a speed limit when body checking?
IMO, it was probably a clean hit as per the rules of hockey. He stopped striding, he didn't jump, he lead with the shoulder to the chest, it wasn't a blindside hit and Evans had just released the puck (it was miles earlier than the Graves hit). I don't follow hockey to know if they've added in a rule that you can't crush someone in a vulnerable position (like the NFL has).
It was a completely unnecessary and very viscous hit - but I'm not even sure it should have been a penalty based on the current rules of hockey (and that's a major issue).
Fire up the goons though as it will be time for the players to police the game themselves as soon as he returns from suspension.