Guys,
I believe if your old name is available you can change to it without assistance from HTC. Select O'club from clipboard (I think have to be logged into an online arena) then select Change Game ID.
Enter the ID you want and click "Test Availability". It'll either say "Taken" or "available" or something to that effect. If the ID is available, you can assume the name by clicking OK (I think). You probably get a warning about losing all your perk points and an "Are You Sure?" prompt, I can't recall. But I think you can pick a completely new name - it's no longer limited to only changing the case of the letters in your name.