Yes, the pre-89 trim has a metal "frame." If water gets in over time the metal can rust and start pushing the trim out, but to me your trim almost looks like it was bent during removal, that metal "frame" does distort easily.
I had the rust issue on my original trim, There was no saving it, so I found a guy on ebay who puts together trim kits from the best pieces he can source. Its a little on the expensive side but he does a little restoring to the pieces. I think his user name was xmastersgt.