Sorry you guys got banned. I don't see them banning you guys for no reason. You must have done something wrong. You guys need to read the TOS agreement to see if you guys did anything wrong. Having a deferent controller could throw a red flag for them. Are they supposed to take your word for it? Put yourself in their shoes for a moment a game that cost millions to make was plagued with hackers on beta day and on release day that were caught. Would you take their word for it? Bottom line something wasn't right and you got banned. You already know there are several controllers out there that do unique things when connected to console and EA knows as well.
I wish you guy good luck, but I wouldn't hold my breath.