It sucks. I used different browsers for the different accounts, but got tired of that. Log in with the permabanned account then log out. It will take you to the Rivals homepage. Log in on that page on the account you want, then type the URL for the host site (iowapreps.com for example) and you'll be logged in there. Hit the three lines icon on the upper left corner, then forums. Load one of those (even if it's not your final destination), then click on the word forums beside the house looking thingy. That will get you to the full forums list for that site.