I see ... so to clarify, you are talking about taking a kid that isn't able to swing to extension, and having them backchain from extension (for JJs, I'll add the reference of 3-O'Clock) back to contact (again, for JJs I'll add the reference of 6-O'Clock), pause, and then push to extension (and again, for JJs I'll add the reference of 3-O'Clock) ... and that clears it up the reason they weren't able to swing to extension. Hey ... if that works for you, and you are happy, then remain happy.
Not sure why you feel the need to clarify. I have made my opinion on this pretty clear a few times. If don't you ever come a cross a hitter than can benefit from this kind of exercise, that's great. Who knows. Maybe some day you will.