I was wondering if it is possible to uncouple engines. I am doing time table work in the sand patch, and had a 'collision' with another pair of AI driven engines. Causing them to become coupled to my double engines. I could not find a way to decouple them from my engines, so I was forced to take them along for the ride. Luckily this happened at the end of the 3rd timetable thing.
You uncouple the locos the same way you uncouple cars when switching Either leave you loco and do it manually or use one of the exterior cameras