I don't know why it never occurred to me before — too many Hollywood action flicks, probably — but glass-shattering hits like the one Milan Lucic just laid on Mike Van Ryn are apparently dangerous for fans.
Check the video (about 39 seconds in) and see how raining glass shards cut up some unlucky spectators who had to leave the game. Careful what you wish you could see up close! Toronto came back to win, 4-2.