[Yoda]

Does "no center" for clubface motion for Angled Hinging imply that the center is constantly moving? If yes, from where to where?

Lynn,
You may be correct but since I can't see it, can you clarify what you're saying? In addition, per your post - assuming that the clubhead motion is constant- i.e geometry of the circle and on-plane, then we have two different clubface motions, both centered to the same clubhead motion. I'll need some help with your perspective.

To Tongzilla's question: Again, there is no center. Hence, it cannot move.

To Mike O's: This is one of the most difficult concepts in TGM. I could write paragraphs and still not have the message received. There must be an illustration...to communicate the words Homer gave me. I'll contact Mathew and interact with his creative skills. Stay tuned!