I haven't really studied the recording closely, but it looked to me like after booster burnout the upper part of the stack folded back on itself. I sort of expected to see the upper stages remain pointing "ahead" and for the booster to separate and kinda slowly drop away, even if the upper stages were unpowered. Instead, it looked like the upper stages bent back onto the booster. The NASA channel only showed it for a second and then the screen went blank. Hmmm.
Did anyone else see that, or are my old eyeballs playing tricks on me?