This course of events should not surprise anybody. Contrary to what some believe, the United States operates under the rule of law. Depriving a duly registered student of access to a campus activity SOLELY because others objected to his participation was an action that would never stand up in court. So the mess continues, and the university administration brought this all upon themselves by pandering to the mob. And for the fifth time let me say that I am not happy that this character came here.
Despite your continued insistence that the university legally has to give this kid a spot on the team, I still don't see why that is the case. People don't make sports teams all the time. It can be for talent, character, whatever...Everyone doesn't get a spot on the football team until they break the school's code of conduct as a student.
The school screwed this up for sure. They never should have aggressively courted him for the team. They should have had the foresight to realize that people would react negatively to one of the most well-known gang rapists in the state being welcomed on to the football team---particularly on the heels recent such ugly events in college football around sexual misconduct (most notably Baylor). And, once they embraced the kid, this half measure was pretty crappy too. No one was happy with "he is on the team, but he isn't".
As an aside---if a convicted gang rapist who served less than a 10 month sentence thinks there is some sort of anti-male bias (as his court argument suggests) in the world then he certainly needs some more rehabilitation.