It can be cheesy, but it's impossible for the game to find out when.
When my char has sprint and beats out 120 movement, I think switching sectors is the equivalent of just running away, which the game engine won't allow because the mobs kind of always know where you are once combat starts.
Ladders, well, it's ladders, you can always climb them and sit on the hatch.
Just moving one back when surrounded and suddenly being save again, that might be questionable.