I almost guarantee you that this is how David Boren has viewed expansion:
Spring 2016: I think BYU and Cincinnati would be great additions to this conference. I could be interested in schools like Houston and Central/South Florida as well.
Post UT going Pro-Houston: I think BYU, Cincinnati, and Houston would be great additions to this conference. I could be interested in Central/South Florida as well.
Post interviews: I think BYU, Cincinnati, and Houston would be great additions to this conference.
Post Houston Game: I think BYU and Cincinnati would be good additions to the conference. My donors and BOR want no part of Houston.
Post LGBT blowups: No one wants BYU any more, and we can't just add Cincinnati, so I'm no longer interested in expansion.
There has been such a blowback against BYU, especially after all of Baylor's troubles, that I think Boren's dream kind of died. I also think that the TV partners were big on BYU, and we could probably "maintain the relationship" with Houston and BYU, but OU isn't going to support Houston at this point, and BYU's support isn't anywhere near where it needs to be to get inclusion.