[O.B.Left]

I will be back to this later today but in the mean time:
The "bands" are part of Hogans EA.
The shoulders are -unfortunately- universal joints. BUT only some of the degrees of freedom are good for golf.
That is the KEY.

Tha Bear

Yes those bands must be something like E.A. He didnt use the bands as drawn himself for some reason. Hogan it has been written, tried to make the two arms act like one big one, which would be consistent with Homers notion of the arms having two divergent vectors (which he rectified by making the left arm inert and under the direction of the right , which necessitated E.A.)