Welcome to the forum. If you go to the D3 common faults section there is a D3 Tech Dump, section called "Exterior Body Repairs" or similar contains a section on how to remove the bumper. I'd copy and paste it for you but I'm useless with this iPad
Incidentally, the same position one went on mine a few months ago, the fella who replaced it for me said he managed to do it by loosening the bumper off and easing it forward a little so it may not be a bumper off job by the sound of it.
Good luck
__________________
Audi D3 S8 - 2007 - V10. B&O, Phantom Black, black and silver interior, and still completely standard with everything working as it should
SOLD 2023
Audi TT - 2015 - Ultra