[Mike O]

[quote=O.B.Left;70115]
"Given that the Plane of LAFW is the Plane of the Left Wrist Cock and given that all Left Hand Motion is Perpendicular only (except for Double Cocking maybe?), how can the Left Wrist, cock and uncock along the Inclined Plane when the Left Arm is not itself on the Inclined Plane? "QUOTE]

A few ways to look at this - let's start with just one perspective:
Take a left hand grip only with your club, dowel, pencil - anything that would represent your club and position your hand so that you are hip high on the backswing- your hand on the plane and your left shoulder completely above the plane i.e. a normal golf motion. If you don't have the shaft already on plane you can get the clubshaft on plane by merely rotating the forearm without moving the location of the hand.

The only way you'll be confused by the above is if you have the wrong idea of "perpendicular only" - if the above doesn't make sense then please define what you mean by "perpendicular only" because it doesn't meant perpendicular to the ground at any location.