Many moons ago a Super Constellation AEW landed at Lossiemouth for a joint exercise with the RAF. Come the time to taxy out, the marshaller thought the space to turn was too tight so he signalled the Connie to reverse, all quite legal for the aircraft so to do. After a few frowns from the flight crew, the F/E set reverse and wound on 1200RPM. The result was that the marshaller was sent about 40m across the apron. He suffered nothing more than a loss of dignity and dirty fingernails!