If you un-screw the assembly that holds that part of the bumper to the wing and then put it all back togther with the bumper in the right you will find it all pinches togther perfectly. I have had to do it to mine a couple of times.
The only downside is that it does it more easily next time you curb it so it makes you extra wary, you may find you need the bend the wing lip back a bit to keep it straight