UTSA cut ties with defensive coordinator Tyrone Nix after inappropriate sexual conduct violation University declined to renew Tyrone Nix’s contract, which expires next Monday Updated: Tags: Outgoing UTSA defensive coordinator Tyrone Nix. (KSAT) SAN ANTONIO – UTSA declined to renew the contract of football defensive coordinator Tyrone Nix after an investigation late last year determined he repeatedly made inappropriate comments to a female student trainer, university records released to the KSAT 12 Defenders confirm. Nix, who was placed on leave shortly after the trainer filed a formal complaint in November, will not return to the football program after UTSA declined to renew his contract late last month.