Briles exact part in the scandal is in a way irrelevant, when speaking about media backlash and why UK shouldn't hire him. Go rewatch the Gameday segment from today when Art Briles' name was brought up and that's all you need to know about what Art Briles part was.
“In some cases, football coaches and staff had inappropriate involvement in disciplinary and criminal matters or engaged in improper conduct that reinforced an overall perception that football was above the rules, and that there was no culture of accountability for misconduct,”
"Football staff conducted their own untrained internal inquiries, outside of policy, which improperly discredited complainants and denied them the right to a fair, impartial and informed investigation, interim measures or processes promised under University policy. In some cases, internal steps gave the illusion of responsiveness to complainants but failed to provide a meaningful institutional response under Title IX. Further, because reports were not shared outside of athletics, the University missed critical opportunities to impose appropriate disciplinary action that would have removed offenders from campus and possibly precluded future acts of sexual violence against Baylor students. In some instances, the football program dismissed players for unspecified team violations and assisted them in transferring to other schools. As a result, some football coaches and staff abdicated responsibilities under Title IX and Clery; to student welfare; to the health and safety of complainants; and to Baylor’s institutional values."