[Etzwane]

You are probably on to something here - keep it up for your own sake - for the time being I'm uncapable of getting this into my head.

Let's try a simpler image: picture a table with a single central leg. Your left arm and the shaft move on the table (that's the left arm flying wedge) and the left wrist cocks and uncocks so that the shaft stay there. I take zero effort to maintain the left arm flying wedge on the table. The right forearm is the leg.

Now in the golf swing the tabletop is not horizontal but inclined, and in fact there is no real tabletop but the right forearm can be used so that the left flying wedge moves as if there were a tabletop, staying on plane with no tension.

That's a simplified image of how I picture the role of the flying wedges, please correct me if that's wrong or misleading.