this thread is a reminder how so many things work when emotion gets involved, or don't work for that matter.
if anyone with a straight face can tell me that someone in the NHL, best in the world at hockey, on skates and conditioning could not do anything else in that situation to help protect campbell then i apologize you don't give these guys enough credit, you've never played or skated yourself, or you just don't really know what you're watching. Someone could pull hundreds of clips of players 'avoiding' things, in whatever body position (hint: it happens all the time) and you can see that these men can do remarkable things when they DON'T want to hit something, or someone. full speed, bent over, falling, cornering etc... you can see amazing feats of their ability to avoid certain things.
i also think this thread is an example of how we get caught up in trying to label something - intentional/unintentional. How about we call this a careless wreckless play by a player with a history of questionable behavior. Again, we aren't going to get this right until players are held accountable for their actions REGARDLESS of result (injury).
of personal opinion, this play was bullshit and Tkachuk deserves a knee his next game.