Number 1 piece of new information from the Big 12-2 meeting last night: They had heard UT and OU's timeline with the SEC was accelerating, given the leaks, and they are concerned they may try to leave earlier than thought (which could impact a number of timelines for the remaining 10 teams). In defense of Texas/OU, this is also what I would do at this point if I really wanted to make the SEC happen above all else: Speed becomes your friend here.
If you are curious, there is a plan to have some Big 12 loyalists (maybe not Presidents) call their friends at major SEC institutions to see if we can torpedo this thing... Targets mentioned to me were Arkansas, Mizzou (not a hard no, yet), both Mississippis, LSU, and Kentucky. We need 4 to kill it, and have one in the bank, though there are rumors A&M will be brought to understanding and this whole exercise is likely futile.