I think that hinging actions only apply to the followthrough phase of the swing and that they do not apply to the takeaway swivel action and the release swivel action. The flat left wrist/hand's swivel movement during the release swivel phase of the golf swing (its approximately 90 degree rotation between the 3rd parallel and impact) is always approximately 90 degrees in a swinger, and it is a mirror image of the degree of left hand swivel action employed during the takeaway swivel action.
Why do you regard its being an off-center motion if the back of the flat left wrist/hand and clubface both rotate to square by impact? If the clubface becomes square to the ball-target line at the exact moment of ball-clubface separation, because the flat left wrist/hand rotates to square during the release swivel phase, why is that an off-center motion?
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