OFFICIAL TIEBREAKER RULES ARE HERE
The South will go to tiebreaker rule #5 between OU, OSU, and Texas A&M.
If you read rule #5 literally, it seems to be different than what was probably intended. Consider this scenario:
Say that in the BCS rankings tomorrow, OU is #9, Texas A&M is #14, and OSU is #15.
I'm sure that the intent of the rule would put OU in the CCG.
However, taking the wording literally, since two of the tied teams (Texas A&M and OSU) finish within one spot of each other, then you would look at the head-to-head result of the top two teams (OU and Texas A&M). Texas A&M won that head-to-head, and would go to the CCG.
The rule doesn't specifically state that it's only if the two highest ranked teams in the BCS are within one spot of each other.
If Texas A&M is one spot ahead of OSU in tomorrow's BCS rankings (very possible), this could be very interesting.