Logistics Loader,
I think I've seen a very similar film clip. The one I saw was taken by one of the technicians on the Red Flag range who was filming his colleagues setting up some electronic kit. The wash (gully) that the Buccaneers flew down was only about a hundred yards away from where they were working and, as you say, all you could see was the top of the fin and the tailplane poking above the desert. Superb - the Yanks were totally banjaxed and one could be heard muttering about the crazy Limeys and their underground air force!