Unfortunately for Knies, there was a lot of head contact, and Whitecloud left his feet to complete the hit. The end result was Knies not only struggling to get back to his feet, but also leaving the game and not being able to return.
Whitecloud was originally slapped with a 5-minute major on the play and likely would have been ejected from the game had the penalty been upheld by the officials. However, after a brief review, not only did the referee not uphold the call, he rescinded it entirely, essentially establishing that it was a clean hit, despite the evidence to the contrary.
While many in Toronto were expecting a suspension announcement for Whitecloud, unfortunately, it does not appear to be coming. Per TSN's Gino Reda, the league has reviewed the play and has no intention of issuing a suspension.