AM--
Thanks for posting that 1/28/64 memo from Forrest Sorrels.
The memo, citing expert surgeons, indicates Gov. JBC's torso was turned to his right, that is facing towards the Zapruder side of the street, when he was struck from behind the limo, by a slug that left a small round hole in the back of his assassination-day shirt (no yawing or tumbling indicated).
In fact, Gov. JBC is turned to his right, and his face is facing towards Zapruder, at ~Z-295.
Thereafter ~Z-295, JBC grimaces and his mouth gapes as if he is in serious agony, and he is pushed forwards, and then falls into his wife's lap, about the time JFK is hot. That all lines up with testimony by the Connallys.
IMHO, the 1/28/64 Sorrels memo affirms my take on the Z-film.
But hey, each to his own.
Caveat emptor, and draw your conclusions.