first, I can not accept ANY responsibility for this, and I am not suggesting you do anything...
the last time I pulled the back panel off mine, when I put it back on I had a similar 'bowing' as I guess I didn't line it up properly. I just squeezed it a bit and it snapped into place.
I wouldn't be surprised if there's nothing 'damaged' on your tv, it's just not in place. removing a couple screws from the back so that it's free to move, then moving it into place may be all you have to do
Displays: Samsung PN64F8500/JVC X35
AVR: Pioneer VSX-1130K, 7.1/5.1.2 audio
Sources: HTPC(Enby), PS3, XBOX360, Wii
Control: Harmony One