I'll simply post my other reply here
Not sure as I've never experienced it. If you can't bend it back and you determine it needs to be replaced then I'd suggest looking on ebay for people selling lots of salvaged G parts and query them. I know there were a crap-ton of used parts a year or so ago due to all the hurricane damaged cars in the NW so there were lots of cars being parted out. If you are not sure how to remove the part then I'd suggest going through the FSM on how to do it. I've recently broken out the FSM pages for the G37 on NICO's G37 page:
http://www.infinitig37.com/coupe.html
From the link, on the right-hand column you will see FSM links. Simply select your year. Be patient as at times it can be a pain to find what you want in all those manuals. Sux they don't have a full index anymore.