I feel for you, believe me I do. I had the same thing happen to a mint, rolled Blade Runner.
However, if it makes you feel any better I don't think it was as bad as I was expecting after seeing the back and the tube. The ink on modern posters seems to flake off when this happens leaving a series of white creases/crinkles up the length of the poster. The ink looks much more stable your poster (stone litho?) so the wrinkling might flatten out with the application of time and weight.
It still sucks though, I know.