Blades,
I think the reason that site had the AAC 10th is that it was not updated through today. But either way the RPI is a concern.
There are now 351 division 1 basketball schools, and obviously some are going to suck. I think that the AAC will have to start pressuring the poor performing teams- Tulane and USF in particular- that they have to upgrade their programs or find a new conference for themselves. There are other schools who can be invited to take their place. It's that simple. Tulane isn't good in football either so they really need to get their act together, get a better facility and arena. This is a school that is in New Orleans and it should be a flagship school in the conference, not a perennial doormat.
It's gotta be some tough love- Aresco has to get on the phone and tell these guys, "the monkey ball sucking has to stop!"