is he doing it wrong? being a 9th Dan?
I know, right?
yeah I really don't know what's going on here, but it sure looks
like his shoulders are stiff during those cuts. That's the usual thing that I find causes my shoulders to pop up and rock forward when I cut. Not sure why he is jerking his bokken to a halt in front of him.
Seriously though are you sure this isn't a "what not to do" demonstration?