sunroof pan

[C.Doner]

Does anyone have experience with the removal of the sunroof pan? I have to get at some rust. The headliner is down, cable out, bolts removed and it is coming loose. The cable tube I am getting ready to unhook after some PB blaster on the screws. After that and disconnection of the drain tubes the pan should drop down.
My question is, how can I remove the unit from the vehicle? it may come out the passenger front door with some maneuvering and possibly the removal of a seat. If that fails all I see is the windshield or back window as options to get it out. Both of those I would like to avoid. If it had to be done, the windshield would be the one since it has the seal that needs attention.
Another option would be to try to fix the rust on it while it is in the car. I would like to get it out though, for obvious reasons.