According the exact wording of the rules, TAMU should go in that case. It's just very poorly worded. Yes, the intent, as the OP stated, is clearly to only apply this if the top two are within one spot, but they didn't actually state that in the rule.
If it turns out like this (I doubt it will anyway... OSU should still be comfortably ahead of TAMU), and TAMU got lawyers involved (which I doubt they would be big enough dicks to do) it could get messy.
I think the OP was basically just pointing out that whoever wrote the rule wasn't paying enough attention.
How do you figure??? Ou is the highest ranked team in the poll that you are predicting, not OSU..