From my experince with a damaged focus with frame damage....I belive that isnt part of the uniobody structure because the metal there is not tied in to the rail that runs all the way down the car. I think that piece can pop off and be redone. I saw ur pics. The best way to check for frame damage is check and see if the doors all open properly and checl all the gaps in your fenders and in the front and rear as well as check the rear glass and see if it sticks out past tailights or seems out wack and check the gas cap to see the gaping. Hope you car gets fixed!