Actually, this was a re-run of the incident with another (dead!) Buccaneer, in order to make a flight-safety film. The clue is all the “goofers” in the shot.
A similar thing occurred with a SHAR during the Falklands war in ‘82, when Invincible manoeuvred a bit hard and Mike B ejected as the jet fell off the stbd side. OOPS!
Still, no one said it was easy (or safe!).
Mog