I can tell after reading some of the comments, thinking about how my swing feels and re-watching the video that somewhere along the way I lost the "whip" of the club because of "stiff wrists" or at least a reluctance to let the wrists c0ck dynamically at the top (I can make swings with very relaxed arms and wrists and it looks the same as the video so somehow I'm keeping the club from really getting dynamic at the top). Last night I spent some time swinging with the feel of letting the club feel a little more "floppy" at the top (if that makes sense) and then really thinking about the whip at the bottom. Not sure if this is the correct feel but it's something I remember doing in the past that for whatever reason I stopped, probably in an effort to keep the ball from going everywhere.
The twistaway is a bit of a mystery to me, and i think grip has something to do with it. I think years ago I played with more of a cupped left wrist at the top, which actually helps with feel of more wrist c0ck for me but not sure if that's good or bad, but I found over time that it left the face too open and led to the rights.
So at times I've had success with the twistaway feel, especially at transition down, but it seems to work best if my grip is what seems really weak to me, otherwise it feels like I'm hooding it and not letting the face open to the plane on the way back. Not sure if that makes sense but I struggle with how much closed the face should feel going back and wonder if trying to keep it shut leads to other BS issues, like the lifting you can see in my swing. My BS looks and feels more in then up instead of up then in. Does anyone else see that?