[Sonic_Doom]

I can agree with that. It is the cause....

(....of a spine that tilts towards the target in the Backstroke...)

Question: are there or have there ever been any GREAT or even VERY GOOD players with a reverse-tilted spine at Impact?

I would crap myself right here right now if there were.

Not to say you can't get to a rearward tilted spine at Impact with a "tripod" type pivot....

If it works better for most people for every club and every shot is the real question I guess.

Believe me I don't like a MASSIVE sway either....you must have A center as Lynn said.

Choose what works best for yourself....

I don't know that anyone has ever HAD a beef (but who would I be talking about...) or could/would ever HAVE a beef with someone doing the "tripod" if it worked better for them.

Really that should go for anything that works for anyone.

The real question as you put it is this-how would a machine built like a human do it?

Why consider everyones abilities, habits, limitations? It just leads to band-aids i.e. I can't do X so I'll do Y cause that works better for me. X is the way whether the golfing public can do it or not.

Uncompensated, precise, that is TGM to me.

Golf instruction is another topic.