If I may speculate for a bit: I haven't lived in the south, only visited Asheville a couple days (and been to conventions in larger cities but that doesn't really tell you much). My naive impression was that North Carolinans might identify as Southerners first, but not as deep south as the SEC states (I'd guess Alabamans might consider Carolinians to be halfway to being yankees?). I mean... NC voted for Obama in '08, though it was the only state to flip to Romney in '12. So I'm guessing if they had to choose between B1G and SEC, they might actually take some time to decide. It might be that the student body / alunmi lean towards the SEC and the trustees / decision makers lean the other way (especially if they've spent part of their careers in the North or other parts of the country).