It's two years too late for Texas but the Big 12 has adjusted its three-way tiebreaker according to the Dallas Morning News.
Oklahoma won the tiebreaker and advanced in the Big 12 South, and eventually played for the national championship in 2008, after tying Texas and Texas Tech for the division title. All three teams finished 7-1 in the division. Oklahoma won the tiebreaker because it was the highest-ranked team in the BCS standings, by .0128 of a point over Texas.
That tiebreaker was amended back in the spring to read that the highest ranked team in the BCS standings shall win, "unless two of the tied teams are ranked within one spot of the other in the BCS poll." In that case, head-to-head results will apply. If that tiebreaker had been in effect two years ago, Texas would have won the South.
The rule change was submitted by Texas AD DeLoss Dodds earlier this year. The change was discovered this week by the Morning News. There is a chance again this season for another three-team tie in the South. Oklahoma is currently No. 1 in the BCS, followed by Oklahoma State at No. 14. Texas is 19th.