Boy, I've never had a problem with damaging more than one or two of the pressure pins. Usually I can reuse all of them. You can start by pulling at a bottom corner. If you need to, use a plastic door panel tool or cover a screwdriver with a clean rag and pry the panel away so you can get your fingers in. When you pull it should pop the pin out and you can work your way around the door. Make sure to unscrew the switches and then lift the door up and out of the windowsill. Also, take off the sail panels at the a-pillars. There may be another screw hiding behind them.