[MizunoJoe]

The 'manipulation' of the Hands Manipulated Swinging Stroke -- the Left Wrist Flat, Level and Vertical at Impact (with the Clubface aligned slightly Open) versus the Club's normal Straightaway Flight point -- occurs when the Grip is taken at Impact Fix and not during the Stroke.

In other words, after the Grip is taken, Centrifugal Force rules.

Hogan transitions from a cupped Left Wrist to Arched from Release to Impact. This results in a dynamic manipulation of the Hinge Action, which overrides that which would happen with CF alone.