a little help please

[Vital]

I know you guys know everything so..I picked the wrong ring by accident for the Brood of Nozdormu rep..picked the tank one instead of caster.

So I was wondering if anyone knows how to change it somehow? I tried asking a GM to but he said you he couldn't because you can change it when you hit exalted but that will be awhile so..if anyone knows how or if you can that would be great.

[Ensui]

You cant till exalted, period.