If the rear doors don't open smoothly then the structure is buckled and it'll likely be totaled.
While I agree with @FlNiro in principle that going through the other driver's insurance is a good idea don't be afraid to loop yours in if you feel you are getting a raw deal. We had a similar situation where the other driver's insurance company tried to low-ball us on the value of our car. Could I have fought it myself? Maybe, but I pay premiums for a reason. Insurance companies have teams of flesh eating lawyers kept starving in dark rooms for just this type of situation. I just called my company, submitted a claim, got a fair value and several months later got a check for my deductible back after my guys pummled the other driver's in arbitration. My rates didn't really change much if at all as a result and I didn't have to do anything but make one more phone call. If you don't have a big history of claims then getting creamed by one old geezer won't do much harm to your risk profile. I tend to err on the side of lowering my own stress and letting the professionals deal with it when I can. YMMV obviously. Good luck and hopefully you get it sorted out quickly.
While I agree with @FlNiro in principle that going through the other driver's insurance is a good idea don't be afraid to loop yours in if you feel you are getting a raw deal. We had a similar situation where the other driver's insurance company tried to low-ball us on the value of our car. Could I have fought it myself? Maybe, but I pay premiums for a reason. Insurance companies have teams of flesh eating lawyers kept starving in dark rooms for just this type of situation. I just called my company, submitted a claim, got a fair value and several months later got a check for my deductible back after my guys pummled the other driver's in arbitration. My rates didn't really change much if at all as a result and I didn't have to do anything but make one more phone call. If you don't have a big history of claims then getting creamed by one old geezer won't do much harm to your risk profile. I tend to err on the side of lowering my own stress and letting the professionals deal with it when I can. YMMV obviously. Good luck and hopefully you get it sorted out quickly.