I remember the broadcasters say that the Texas d-line doesn't react or try to anticipate zone read plays and what not. They just charge full force for better/worse and if they miss, hope that their linebackers and safeties clean up.
I think that along with having success running it those first two series, and thankfully getting ahead early, pretty much went into "If it ain't broke don't fix it" mode.
No, I'm not going to want Boykin to throw 60 times a game in order for us to win, but I'm not going to say the passing offense bites rear end either. 7/9 is a good percentage and the only one he really threw bad was the one picked.
I'm not sure if he was injured throwing or not, could have also played in effect, but we had success the first few times, keep doing it.
And, as mentioned above, a few pass plays turned into running plays due to UT's aggressiveness, thankfully which Boykin also exploited in most of his scrambles when they were necessary.