The picture of the Brit at Changi reminds me of when one of our squadron pilots was returning to the UK ex-tour. The aircraft had started its take off roll when this stalwart stands up and shouts that the aircraft has to stop or it will crash. A loadmaster buzzes the cockpit and passes it on so the crew slam on the anchors and stop it.
When asked what the panic was he states that the controls were not connected as both ailerons were hanging down.
They kept him out of the way of the other pax during the twenty-four hours or so whilst they were fiddling about with brake units and tyres.