Phil, I'm glad you could sympathise with exercise. It was a bit nerve racking as you can appreciate.
When it was driven in 10-15 years ago it went in forwards but the extraction was complicated as a lot of shelves & racks have since appeared. Yes the small mirrors have limitations & only one could be positioned to be functional.
The tilt frame was too high, so we lowered that & got it halfway through the garage then hit a beam. So out it came again & the frame was removed completely. I suppose if that was not enough the next step would have been to wind down the torsion bars & pretend we were loading it into a Beverley. That would have dropped about 4" in height.
The FV1601 that followed was easier as it was facing forwards & there was no body!
http://www.youtube.com/watch?v=OXeDOkJ_PU4