IF (the emphasis is justified) Texas were to lose on Friday, they'd have 2 conference losses, which would almost certainly put them in the mixer with about 4 other teams. Because Texas didn't play oSu, all sorts of oddball elimination scenarios occur. Ironically, after having the best chance of being the #1 overall seed, a loss to Tech would mean they'd in all probability crash out of the CCG altogether since the combinations necessary for them to be included in a tiebreaker are slim.
If Texas wins on Friday, then oSu has to lose at Stillwater against BYU for there to be any confusion since the Big 12 changed clarified the tiebreaking rules last week.