How did the 12 SEC teams agree on these East & West permanent rivals for over a decade?

Auburn - Georgia, Florida
Florida - LSU, Auburn
Tennessee - Alabama, Arkansas
LSU - Florida, Kentucky
Vanderbilt - Ole Miss, Alabama
Georgia - Ole Miss, Auburn
Arkansas - Tennessee, South Carolina
Alabama - Tennessee, Vanderbilt
Kentucky - MSU, LSU
Ole Miss - Vanderbilt, Georgia
South Carolina - Arkansas, MSU
MSU - Kentucky, South Carolina

I'm surprised they didn't have a written clause for MSU. Something like MSU couldn't represent the West in the championship game if they finish in a divisional tie for first place. Their East schedule was complete garbage and they should be ashamed of hanging a banner that one year.

Florida and Auburn were original members from the SEC. What idiots at those schools decided to bend over and take it. I assume Florida would have played for a few more BCS championships if not for Auburn being a thorn in their side. Auburn might of had another SEC championship with a better schedule.