I posted a message a couple weeks ago about my bulging rear floor which is creating less foot room for passengers. I don't know however if mine has actual suspension damage as you have described, my rear floor problem appears at least to be only cosmetic. I thought initially that someone jacked up the car wrong and bent the floor, but someone in the forum suggested that this was a common problem caused by hard driving. Here are some pictures. Are you experiencing a similar problem?
This is happening evenly on both sides of the rear floor. Maybe you can post some pictures of your damage? - and we can compare battle scars.