The University Conduct Code/Displinary System was carefully crafted to provide Due Process for any student accused of an infraction.  The "team rules" are established by the coach, reviewed by the Athletic Department, the Administration and, I presume, the University's legal counsel.  The process for terminating an athletic scholarship is carefully outlined by the NCAA and includes, at several levels, processes for appeal.

Again, discipline imposed by the University is NOT LIMITED to violations of criminal law.  Again, a simple example: Cheating on a final examination is not a violation of criminal law.  However, it is a very serious violation of the conduct code of every University and severe disciplinary action (in accordance with the Conduct Code's Due Process system) may result.  

Let's follow the case.  It should be interesting.