Try to PM the Administrators (theymos, url=https://bitcointalk.org/index.php?action=profile;u=78147]Cyrus[/url]) to see if they can delete your account, or change the username (which is very infrequent). Specify clearly that you messed up by placing your email as the user name. These petitions are seldom attended, but it may be worth a try in this case.

Regardless, you may need to change your email if it is tied to any account that you have any appreciation for (crypto related for example), and certainly don’t ask for it to be your forum account’s associated email.