The scenario you're promoting requires us to believe two people behaved in an extremely unusual manner:
1) That the AD skipped the usual post-season review and met with the coach of a last-place team the week before the end of the season to offer him an extension.
2) That the coach, who everybody following UT sports or college baseball took for granted would be fired, turned down this miracle extension offer because he thought compiling the worst 5+-year conference record in the last half century entitled him to a multi-year contract.
If you expect people to believe both of these strange things happened, the burden is on you to provide sources or evidence.
[NOTE: This comment would have made more sense if Backwards K hadn't deleted his comment saying I needed to explain why I didn't believe his theory.]