The auth servers work fine most of the time, I've never really had any more problems with them over the game servers themselves. They're slightly slow at times, but what the hell. Splitting them up also provides some issues as you'd have to have two servers basically doing the exact same job, but unable to help each other out at all.Yes. The forum auth server seems to be the same as the main auth server. I see no reason to believe they'd be smart enough to move TS/VT to a different server if they didn't even think to themselves "Hey, maybe loading down authentication to core game services with non-core forum access is a REALLY BAD IDEA".
So you think they'd be stupid enough to host TS/VT on the same servers as the realms?
At the moment if there's a run on the game servers, the portion appointed to logging in users on the forums is helping out as well. The only fault on their part is they were idiots on structuring their hosting properly or miscalculating the power to handle both. Who knows, maybe their miscalculation was on the game-servers and not the forums? Then their setup actually helped. It's difficult to tell.