I think you can just remove the escorting behavior requirement here:

				<OnShow>
					(and (eq (objGetData gSource "behavior") 'escorting)
						(objGetProperty gSource 'playerWingman)
						)
				</OnShow>
nms 18 Sep 2017:

In 1.8A3 I enabled orders to be issued to escorts in almost any other state.