Leach has been at Texas Tech for nine years, and until last year he'd only had one season in which he didn't lose at least four games. The high point before last year looks to have been beating Virginia in the Gator Bowl. When you're losing four and five games a year, it's not just that you're stuck in the same division as Texas and Oklahoma.
I wouldn't want him at UT because I want to actually win, not be "the team that nobody wants to play."