D I think you took "towards the right foot" too literally. I dont where Homer said this but I would take it to mean laterally rather diagonally.
Shorter sticks require more upright lie angles however which does lead to a more upright plane angle , that and the abreviated backswing (less back up and IN for a shorter backswing) . Which translates into less OUT more Down , steeper Angle of Attack, less "side spin" (tilted backspin) more backspin. IMO, you can maintain shaft plane while moving the ball back with a singular club in hand.
Lets go to a new thread.
Ya, I used to think that too. It jives too well with chapter 2. So I'm believing it. Besides, he was too careful. He picked every word. Why not just say "Aft" on the Plane line.