I have studied the notes many times; great stuff....
Homer quote from the notes, "The amount of Hip Slide is dependent on swing plane. The flatter the plane the more pronounced the slide is. The more upright the plane the more subtle the slide".
If using the Turned Shoulder plane for example, the amount of slide (axis tilt) is to put the right shoulder on that plane. I am not sure where Mr. Kelley was going with the quote above in this regard. My Incubator never spit that one into the Computer.