All of the reports have put the blame on the Kentucky political pressure. But I am wondering if the following scenario occured as well:
It was widely reported that Texas wanted UL over WVU. However, Neinas probably told WVU that they were being invited because they had enough votes to approve them over UL as the 10th team (with the votes from all other B12 schools enought to offset the Texas no votes). However, knowing Texas' thoughts on this and their ego...they may have forced the issue and said "if you take WVU instead of UL, then we are not agreeing to the terms to keep the Big 12 together." Based on Texas' reputation and history, I would not put it past them to pull a power move like that at all. Everyone knows that Texas dictates the Big 12 policies and they will not relinquish their power. Texas gets what Texas wants (which is why Colorado, Nebraska, aTm, Missouri have all left now).
I haven't seen this scenario reported anywhere at all. But I would not be surprised if this is the way it went down and Texas and their 'sources' are laying blame at the Kentucky politicians feet for a convenient scape goat.