Confused...
This looked like a stall due to aoa and roll. The lift on the wing was transversing from positive to negative at a low altitude.
When you say high speed stall I think of "mach tuck" where the center of lift moves aft of the wing as the aircraft approaches trans mach instability, the tail foil may as well be a single airfoil at this point unable to controll the pitch of the aircraft w/o a pitch axis, the pitch axis is gone.