I edited my post above to include my NOW working multi page support! Here it is a second time just in case you're a lil slow....
Code:
RewriteRule ^t-([0-9]+)?-([0-9]+) showthread.php?t=$1&page=$2 [L]
If you know the templates you can now find the multi page references and get them working properly!
I used dreamweaver to search the entire vbulletin directory for the code $url which is used for redirects in things like the newthread and newpost. I modifed them slightly so now all redirects are working properly.
Yes this is running notes as I figure things out... I'm looking for help/suggestions. You will have to know a little bit about the templates and do a bit of thinking but everything you need to know to do this hack is posted in this thread. Step by Step instructions will be put together when I get things finalized.