[neil]

Not trying to get weird here but would like to know how this sounds to you guys.....

The left hand turns and the right wrist bends, the right forearem rotates and the right elbow bends.

Extensor action (as I feel it) maintains the alignments, balance and flow.

If this is a correct sequence then......I was thinking that the words describing the movement of the clubhead would be.....

In/back (much like down/out is used for the downswing), up and behind.

In/back, up and behind. It makes for a nice compact backswing.

Is this too crazy? Is there a flaw in this pattern?

Backward ,upward and inward-INSTANTLY and SIMULTANEOUSLY.
Extensor action is constant all the way from address to finish.
I would not call it a sequence.Remember to ensure the club should always point at the plane line -extended to the horizon until it reaches parallel to the plane line.
So no, doesn't sound too crazy to me ,....".nice compact backswing " sounds highly desirable