Yeah it's more complicated than just changing the username, hence I need to do it.
The email addresses are there because when people signed up they signed up with their email address as their username and just put in another display name.
The conversion works off of username and not display name. And hence why you have your email address.
I need to change it in 2 places in order for you to change it across the board so please either email me or PM me the username you want and I will change it. (I can try to push through the changes automatically. the problem is that then people won't be able to login as they would have used their email addresses as login)
Dan