Not to doom-say, but I honestly don't expect this to be resolved in any satisfactory manner. Considering that it involves 3 separate companies and that they've said nothing about it on Lodestone, I think this is just going to be the sad new reality for AT&T customers. Your options are going to be to use a VPN, change ISPs, or just quit.

I hope I'm wrong. I really really really want to be wrong. But I don't think I am. This sucks for everyone effected.