Those reasons are now disclosed...
Seems the Willis has been the target of a stalker and he finally snapped accoriding to the Dallas Morning News.
Patrick's father, Samuel Willis, said the incident occurred at a team gathering at an off-campus residence when a student, who Willis claims had been harassing and stalking his on for almost a year, showed up uninvited. Willis said the student was asked to leave, and when he didn't, his son "snapped." Willis said other players pulled his son away from the student.
I know you weren't yourself when you did this, Patrick.
(UPDATE: Reinstated on Thursday for this weeks game)