So, the thumb appears to be on the right side of the grip (as opposed to aft side) at adjusted address because the left hand is NOT facing the angle of approach?
That is correct. This whole idea as to what constitutes the 'back of the shaft' changes as the Shaft rotates On Plane. That is why, in 1-L #11, Homer Kelley added the boldened words below to the 7th edition:
"Clubhead Force and Motion is On Plane at right angles to the Longitudinal Center of Gravity (the direction of the motion) and varies with the Speed, Mass and Swing Radius."
Threaded Mode
