To the (6?) Gods of UbuntuForums:
I got it wrong the first time. I have 'fixed' the email at SSO to match the UbuntuForums email, and I guess now I need you to disassociate this user account (burgwinkel) from my SSO account. Correct me if I am wrong, but I think then I should be able to link my SSO account with my original UbuntuForums username, ubuntwinkel.
Thanks. I can't imagine how huge a headache this has been for all of you, and I am hugely grateful.