I believe that Doyle and Hebron are talking about transporting the hands with the pivot. I'm talking about the the hands dropping to release point during the pivot, the shaft staying close to the Right Shoulder and the Right Elbow moving in front of the right hip.
[Bold by Yoda.]
MJ,
For a number of reasons, the ideal Swing Plane is the Turned Shoulder Plane (10-6-B). Further, this may be accomplished with Zero Shift (10-7-A) -- that is, the Hands adhere to this Plane Angle throughout the Stroke and execute a Straight Line Delivery Path (10-23-A) to the Ball.
However, the procedure you have described -- "the hands dropping to Release point during the pivot" -- is a viable alternative and is catalogued as the Angled Line Delivery Path (10-23-D). That is, as the LeadingBody Transports the LaggingPower Package to Release, the Hands take a nearly Vertical path to the Elbow Plane Angle before they drive directly at and through the Aiming Point.
There is no inconsistency here. There is only Homer Kelley's genius:
Straight Line or Angled Line. Your choice.
And there is no right or wrong. Only personal preference.