Yep...I had to create a new gamertag acct and teambuilder page just to create the new teams to DL from.
Also you cannot use teambuilder custom logo teams DL'd on your xbox360 unless it is hooked up to the internet. It will not display custom logos unless you are actively connected. My helmet showed an EAsports logo on my alt helmets because I wasn;t logged into xbox live. It said it could not locate logo.
wtf?