We were routed to the left when taking off from the start of Space Mountain a few years ago during EMH. The car in front of us had someone in it that was screaming to get off, but they had already launched that ride vehicle. They routed them to the right (normal way) but then must have stopped their car to evacuate them. We were already "pulling up on the lap bars" and moving forward when this happened. So the CM in that little booth must have made a quick change, and we went to the left, into a backstage area. They had to bring ladders to get us out. It took about 15 minutes, which felt long as the precious EMH time was ticking away! We didn't ask for anything but several asked for FPs, etc. They did let us circle right out into the single rider area and just get right back on the ride after we were evacuated. I didn't love that it burned some EMH time, but what are you going to do? We just rolled with it!
We have been in line for ROTR many times when it has broken down (who hasn't!?). It is still frustrating to me that they have a "one hour" rule it seems, such that they will make you stay in line for one hour before issuing a FP to return. If you choosed to leave the line prior to one hour, you lose your BG and get no FP. I hope this changes dramatically when people have to start paying $15+ per person per ride to do ROTR!!