When I removed a 70" jackknife sofa from my Outlaw: getting it loose was really easy.
Mine was held to the wall with about four bolts (and a bracket.).
As for getting iy ouy of your rig: there's no easy disassembly of those things.
If you can't get it turned to get out the main door: try taking it out the chassis doors up front.
You'll need to wangle your chairs around a bit; but you should be able to find enough space to get the job done.