There is a box called unnotify that will show up where notify was.
Also, the notifications should be going to whichever e-mail address you had linked up.
You can't ever make the topic stop showing up in "Show new replies to your posts" unless you delete all of your comments in the thread, and if you were the OP, then the thread must be locked.
When I created this account, I though briefly about resurrecting my old one, but not having the Do I Pass threads show up was too good of a side benefit. Plus, I don't like everything I say, it was like changing my clothes.