The police acted based on one guy's unsubstantiated claims. Tank no commented and immediately retained counsel. UT swiftly investigated, reviewed the evidence, evaluated all sides of the story and felt the circumstances didn't warrant the charges filed. So Tank wasn't suspended by UT, allowing him to remain with the team while the student conduct process was completed.
He was cleared by the university, but will not play without admin approval. And while UT and counsel have been working to have the felony charge reduced or dismissed, that has been slow going. The legal hold up is not on UT's side, but the "unavailable to play" is.