Truthsayer,
I had a problem like this a while back. I used the "Always Logged In" button all the time and during some Administration work I had to logout and couldn't.
I had started using and am still using Firefox rather than IE, but the general idea is the same.
Firefox Browsers... Go to Tools > Privacy > Show Cookies > look for your forum name > delete all cookies.
You don't have to delete ALL your cookies, just the ones for the MisFiT City Forum.
If you are using IE or some other Browser, let me know and I will see if I can conjure up a path of execution.
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Just Me
Sass