So, its the login to an account? Can I change the password in a way that the originator can't regain access?
Yes you can change the log in and information(e-mail/secret question) before you let the BTCs go on ClearCoin.
I'll also give you the e-mail address and password that I'm currently using for the Steam account, because you may need that to change the e-mail. And I only created the e-mail(Steam didn't like my hotmail address for some reason) to sign up for steam, so I've never used it beyond that.
(and yes I'll take 20BTC at this point)