If there are "true" hinging actions happening in the backswing, then I would like to learn more about the phenomenon. I would particularly like to see visual examples.
I am aware that a swinger's action has a release swivel action in the downswing, but I know of no difference in the release swivel action of a swinger who uses horizontal hinging versus angled hinging. If there is a difference, I would like to learn more about this difference.