I get your point. I didn't say it was clean, I'm just saying that it wasn't dirty. I don't think Ovie primary point of contact in this case was the head...more of the upper shoulder/chest which lead to his head slamming back. Nor do I believe he was aiming for Michalek's head.
Btw...(this coming from one of his biggest fans/supporters) if you're judging whether or not a player leaves his feet as an indication of clean vs. dirty hit, you'd better start going back and re-classifying a good number of Kronners hits because he often leaves his feet (most cases...just a little

). This however does not sway my support and overall like for Kronners game, because I personally look at just more than leaving the feet to gauge whether or not a hit was dirty (e.g. what angle was the hitter coming from, what position was the hittee in, was it open ice or on the boards, did the hittee see the hit coming, were elbows up, was the hitter aiming for hittee's head, etc...).
All in all though, it's professional hockey and non perfect hits are a part of the game. Having the league office dissect every big hit I just see as being a slippery slope to changing the game I (we!) love. I see your point though