I pose the question because it probably needs to be asked.
If in the very small chance it turns out that Horny was involved, even to a slight degree, what become the consequences of hiring him?
Absolutely. We don't even need to discuss the moral component here--though that is absolutely a huge part of this conversation, a deserved part, and one that aligns with Texas' stated identity.
But we don't need it. We can be oppositional to the hire, with full justification, on administrative and executive grounds alone. It's not a move that would pass Herman's own ideals of "excellence", "alignment", and "accountability".
There is no such thing as a good hire at any cost. In answer to your question, if he is found to have been tainted, it will bring Texas' entire brand identity into question. Not for every person or in every case, but that will become part of the new normal for Texas for as long as Herman remains in the football program.
I will add, though, that the purpose of vetting is to answer questions, not to raise more than you started with. Horny's questions are multiplying. If the new allegations are even 25% true, above and beyond the stuff loosely acknowledged by PepperHamilton, the probability that Horny knew nothing--when dozens of 18 to 21 year old girls not only knew about it but corroborated in it--is dropping fast. It's becoming almost implausible that he wasn't wrapped up in it one way or another. Even Horny supporters know in their gut that half the beach of justification they were standing on just erodes with the new wave of accusations.
I'm not saying he's guilty, but I am saying the questions around that are getting more and more infected. Hell, we can even assume he knew
something of it--by far the most likely assumption we could make, and the most reasonable given his position with the Felony player--but that he was disgusted by it, hated it, and just chose to say quiet.
That staying quiet
still brings fantastic legal and institutional accountability. He doesn't even have to be a bad guy for him to be still be an accomplice and to face major legal and ethical consequences.
There is no football arithmetic to this decision that even approaches 1% of the influence of the other questions involved.