Sorry if I sounded argumentative Carl. I respect your test experience and I understand the maneuver you're describing. It's certainly a better option than doing nothing.

Just to continue the academic discussion though --
I disagree a little bit with "the fact that we're talking about a wide body has no relevance". Certainly you would agree a 747 is not a T-38. The fundamentals of aerodynamics and physics may be constant for all aircraft but there are huge differences in roll rate and thrust to weight ratio, etc.
Executing that procedure in a 750,000 lb. airplane at 500 feet with the gear and flaps out just doesn't seem likely.

At any rate, I agree that it would all depend on how far the CG shifted. The video from Bagram looks like the event was so bad that the airplane went nearly vertical and then pretty much fell out of the sky. Whatever broke on that jet, it left them with basically no control effectiveness at all. Those poor guys were just along for the ride.