Perhaps you could have the turret in a small hole in the ceiling. It could be on its side, >| Fusion coils could explode and knock it off the hinges keeping it in the ceiling, falling down and being a "tripod-less" turret.
I'm not sure if it would rest on a Flag Stand or Capture plate, put you could put one of those way up with the turret resting on it and then have a fusion coil break it off.