Ringer -
I didn't get the impression that Jim was advocating two types of spin simultaneously.
Hmm, I saw several references to greater backspin making for less axis tilt and such.
Really as long as people understand that as the D-Plane tilts so does the spin axis of the ball I think it's all good. Higher lofted clubs have a harder time tilting the D-plane where as lower lofted clubs the D-Plane easily. Thus making longer clubs easier to curve the ball with than short clubs.