[Mike O]

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Not many people would see the hands coming out TOO much, and the resulting actions and compensations for that action("roundhousing" etc.)... good observations mikeo! His stroke LOOKS excellent in many ways, however, and I think you would agree.

I believe I have heard this called... "coming over the bottom."
He does an excellent job of compensating, if in fact this is the case.

It sounds like the "Downstroke Waggle" is how you would go about correcting something like this. You mentioned also "Hands Controlled Pivot" vs. "Pivot Controlled Hands".

Maybe a picture sequence can be posted(I don't have the ability to do so) that shows the hands coming down in relation to the Plane Line, as you describe, and the resulting Hip Action, weight shift ,and Foot Action that occurs from this change.

Lagster,
Not sure how I can help further. However, absolutely looks like Collin can really play! As far as sequences, I would just say go frame by frame in the first swing of Chapter 10 for Collin and then go frame by frame with Els or Hogan in the Gallery. One of the points I was making in my post was that the body shows through amplification- what the hands and club have done- therefore it's part of the information that you use to determine what the clubshaft, face and head have done throughout the movement- that detective work combined with TGM knowledge can help you figure out what's going on with the club and hands and therefore what the club and hands need to do differently and likewise what the body needs to do differently to support that movement.