Earlier this season, Wisconsin suspended Craig Smith for an extra game (he also received a DQ, which includes a one-game suspension) after his high hit from behind on Minnesota State's Geoff Irwin, which caused Irwin to miss two games. Also Minnesota freshman defenseman Nick Leddy had his jaw broken and is out six weeks after getting hit high with the shoulder of Alaska-Anchorage's Jade Portwood. Although no penalty was called on the play, Gophers coach Don Lucia called the hit illegal and asked the WCHA to suspend Portwood. The league did not.
Between this story and so much discussion about concussions in sports recently, I wouldn't be surprised now to see more suspensions if the hits don't start coming down soon.