This is what I were told, and I make no apologies if the info is wrong.
Saudi tips up to sign something, saudi offered a flight in Typhoon at last minute, rush job putting saudi chap in to the seat, pitot covers not removed, Typhoon spazzes out on take off, pilot/instructor in rear seat bangs both out, front seat goes one way, saudi chap the other.
Like I said, may be bo11ocks.