can i ask a somewhat grim question?
what was the situation/ethos if, while say the pilot or co-pilot was out of their seat and warming a pasty/having a pee/stretching their legs, something happened to the aircraft that might result in its loss?
was the ethos to get back in the seat so that if loss became inevitable, everyone could get out, or was it to stay out of the way and allow the remaining crew to concentrate on saving the aircraft, with the unseated crew member accepting that they might have to remain in the aircraft?
sorry for the morbidity...