[MizunoJoe]

DG - How is the right forearm moving downplane? You say the pivot responds to the right forearm movement, so something else had to get it moving. There are only 2 ways to move it in such a way as to start uncocking the right elbow directly from the Top - by cranking the right shoulder or right tricep thrust. But if it's the right shoulder with an inert right tricep, then that's just an ordinary 3-barrel inert left arm sweep release Swing with the mind in the right forearm rather than in the hands. The only thing left is the right tricep.

Just because he doesn't mention tricep doesn't mean he isn't using it.

The real tipoff is the elbow uncocking from the Top - how could that possibly be thought to result in the transfer of the swing center from the left shoulder to the right elbow which Homer says happens in a right arm Swing? The only way that transfer concept makes sense is to thrust the cocked right elbow to a fixed position and then let the momentum transfer uncock it.