If you think UT's recruting as a whole "sub-par" you must smoke crack.
Did they struggle last year? Sure. That same recruiting practice also resulted in 4 BCS bowls since 2005 of which they won 3 including 2 NT games in which they were 1-1. Also how many recruits go to other schools that dont pan out? Quite a few.
According to ESPN TX currently has 54 players in the NFL. I didnt take the time to determine if any of those players were from the pre-Mack Brown era (my guess is that there are probably a few but not many since he has been there for so long).
I think that last year was a result of people getting complacent, both the coaches and the players. They didnt have the player leadership that they have had in the past, it wasnt a lack of talent.