I Activated My ACSM To The Wrong Account

I made this account because the person who was going to register the ACSM to their account could not remember their creditentials. I created a 'trash' account and logged in to Adobe Digital Editions and opened their ACSM book to see if it was working etc.Then they recalled their login info and when I logged out to login to that account, it told me that the book was registered already. Any way for me to revert this and register the book to the other account?