Like I said, the A-Sun is quickly fulfilling its "Manifest Destiny" of being the conference of small private/religious schools in the South, which is the basis on which it was founded, as the Trans America Athletic Conference in 1978. Its 2006-2007 membership will feature seven such schools (Belmont, Campbell, Gardner-Webb, Jacksonville, Lipscomb, Mercer, Stetson) and two "others" (ETSU, Georgia State). The Big South Conference has become more fragmented in its "blocs."
Birmingham-Southern, Charleston Southern (football), High Point (?), Liberty (football), and Winthrop are smaller religious schools. Coastal Carolina (football), North Carolina-Asheville, and Radford are public (liberal arts?) schools. Virginia Military is a predominantly male military academy.
It is rumored that the TAAC was approached by the Big South about "sharing" the duties of a football-only conference (mind you Samford had not yet even announced its departure for the OVC at this time), but the TAAC and its schools declined. In an ideal world, there would an extensive membership changeover between the Big South and the SoCon so that each would have homogenous membership, but that simply isn't going to happen. I am surprised that Birmingham-Southern is in the Big South (closest conference opponents are in South Carolina), but perhaps the A-Sun has just not gotten around to inviting them yet...