A suggestion, perhaps.

Default everyone's "Away" timer to 10 minutes and then 10 minutes later, if there's been no activity in the craft or NPC dialogue, disconnect them.

That gives them 20 minutes to do whatever it is that they're doing without congesting the queue.

I'm also pretty sure you guys can make it so it's only Balmung, too.

No other server on the Data Center is having issues.