Buper paint peeling. How do I remove the bumper

Ok so someone backed in to me about a year ago so I had the front bumper replaced and painted. I decided to wash the truck the other night and found this was happening:






All of this came off with me hosing down the truck. I have a lifetime warranty on the paint job from the body shop but I am going to go another route. I am thinking about Rhino lining the bumper (doing it myself of course). I can't find the damn write up on how to remove the front bumper on the second gen. If anybody can help me out that would be great. I will update my pics to show everyone how it went. I am still debating on doing the same to the fenders as they are starting to fade a little bit.