Just disable the propulsion stuff, it looks stupid. it was just a script stuff in the first episode to move the station to the wormhole. They never did it again otherwise they could move the station to every fight.
Although not seen onscreen, there was this one episode, where the station was being "dragged" towards the wormhole. After the dragging stopped, they needed to move the station back to it's "original" position at the mouth of the wormhole.
So yes, movement is canon, movement is possible. Flying around like a starship? Not a chance in hell. It should have -limited- movement at most. If it were me, i'd include two separate hardpoints: One with "thruster" movemenet, one without (i.e stationary).