People lie. They get caught doing something they aren't suppose to and they know Bioware isn't going to publically call them out on it, so they lie. They think if they create an uproar, or convince the public they didnt't do anything wrong, bioware will back down. If you know somwone who got banned, ask them what they did. If it doesnt sound like a bannable offense, then ask them what they really did.
As a side note I'm sure some folks who were truely innocent got caught in this ban. It happens when theres big sweeping ones. But they are in the minority, and they'll be back soon enough.