Oh gesh....that molding. For some reason I thought you meant the front. The rear is held in with a few screws at the base just above the convertible trim sticks. Once removed then you'll need to carefully pry the molding up by grabbing the area where the moulding/clip area is, starting from the ends. Don't forget to remove the screw on the end tabs. Depending where the ding is in the molding, it can be carefully flattened with a trim hammer followed by a few iterations of sanding then polish. It's time consuming indeed, especially the polishing.
