For your forum account? I don't know what the forum administrators could do (they may not be able to disable two factor for you) or would do (they may not be willing to disable it, by policy).
Note that this is sort of the point of two factor. You added an authentication measure to protect your account. And it is indeed protected. Worst case you create a new account. I wouldn't think there would be anything critical you'd have had stored in the forum.
I'm just trying to get my account 2 step removed so I can re-setup the 2 step. I was told to get a hold of the forum admin, but I can't find them. I upgraded my Android Phone and it didn't transfer any of my 2 step stuff so I had to setup the Google Authenticator App again. If someone can point me in the right direction or who to contact it would be great.