Someone recently started a new TSA thread, which solves the redirect problem, obviously, but it sucks that many valid posts will be lost if the problem is not resolved. Someone new to the site may try to go to LAST PAGE, it never opens, so they don't get to read the older posts in the previous thread.
Correcting the redirects error would be primo solution #1. Another option would be to create a new thread, and copy/paste about 20 pages worth of posts into it. Probably not easy to do using vBulletin, but perhaps a first post with a copy/paste of text body from the older messages might suffice.
Just some ideas...