Membership Mistake

Hi there,

New here, didn't think my first question would sound quite like the following:

Ho do I delete a free wpmu account?

I made the biggest mistake of creating my first account with facebook sign up, then upgrading to full membership - I then uploaded the Dashboard plugin, and entered a complete different email address from the one I use for FB to sign in - thus creating a second account!

I've deactivated and deleted all the files of the dashboard plugin, but when I re-upload it, it remembers the free account by automatically signing me in- thus disabling me to access my paid membership account with all the awesome themes and plugins.

Please help...