Good point. There might be someone out there with the right answer,but, I think a strict interpretation like that would preclude a player from even basic handling of the puck in a back-and-forth motion to set up a deke for a shot on goal, or it would preclude a player from drawing the puck far back on his stick for a delayed wrister or to shelf the puck.
Maybe the key is that the player needs to be in forward motion, not necessarily the puck. During the spin-o-rama, Blaker was no longer moving forward, but, he wasn't moving backward either. It was more like a 360-degree pivot in basketball. Bottomline, it's probably ok to pivot in place and do whatever the heck you want with the puck during a penalty shot or a shootout.
Thoughts?