From those photos it appears to be just a little superficial scratching of your uerethane bumper ?
Unless you are up to going the divorce route, I would suggest simply spending $20 on some touchup paint and/or spray paint, and doing your best at hiding the damage. Sure it wont last and it wont be anywhere near perfect... but it will look fine from a glace at 10 feet away, and thats probably good enough.