I thought that quote was interesting more for the bit about Sen. Salazar and the extent he went to in order to get CCW banned at CU. He essentially made CU it's own little state. Confirming that Boulder is just "25 square miles surrounded by reality."

Legal options for the university? If you're a student there, obviously they can attempt to get you for violating the student code of conduct or similar policy. This could definately include expulsion. Is it legal? Can you challenge it? Probably. It depends on the university's rules and policies regarding firearms. Beyond that I believe it largely falls into the category of the offenses you can get charged with when you're carrying off of a university campus. If you accidently flash someone and they are "alarmed" maybe disorderly conduct, perhaps more. Someone else will have to provide expertise on that. Maybe an LEO. Just my opinion, not legal advice.