Hope I didn't destroy my camper...

dochalpin, were you removing the paneling from the inside? The only proper way to replace the paneling is from the outside. You have to remove the skins. It helps to understand how your trailer was built. The walls are built as a unit and the attached to the frame, the rafters are added and the panels are basically sandwiched between the floor, cabinets, closets and the rafters. The skins go on last. You have to reverse this process to take it apart, otherwise you are going to encounter problems.

Some people "gut" the trailer on the inside and try to remove and replace the panels but this method simply does not work.

If you have bent your skins, they are probably still salvageable but may show the dents. You need to remove your trim (j-rails, awning rail) and then remove the skins and then remove the framing in sections and take out one panel at a time and replace it, replace the framing and do the next.

I agree, remove the J rails, windows, doors and take the skins loose! Do not gut the interior. You will cause yourself a lot less worry and stress doing it right the first time.