Are you looking for a DIY for removing the rear bumper? If you are, it is fairly easy. It requires the removal of teh rear taillights to get to teh bolts you can see beneath them. Then the only real tricky part is there are two plastic studs that have to be turned 90 degrees. They are out of view and you have to use I think an 8mm wrench using 15 degree turns to turn it, because the space is so tight. These plastic studs are inside the bumper at the corner end of each taillight and are very hard to see. Once you have those turned a full 90 degrees, then all you have to do is make sure that the rest of the bolts holding on teh rear bumper around teh wheel wells and on teh bottom are out and it should just pop off, then disconnect the wiring harnesses and your done!
Maybe someone can post a few screen shots from the manual and all of the bolts that hold in the rear bumper.