Gdog's right, with the flex most highbacks have you can get away with not rotating them. But I still would. You really don't want to have to rely on the flex to them them in the correct position. Plus you'll lose the support from the outside of the highback as they're not turned inward towards the tips.
My t-bolts didn't come out easy either. I had to leave the screw in half way and pop them out with a hammer. They didn't go back in easy either. It's a pain, but nothing unusual.