"But when he disrupts someone else doing those things and exercising their own First Amendment rights, then his is disorderly and got what was coming to him."
Except he didn't disrupt anyone, did he? He walked up to the microphone that was offered for questions. He asked his question (and in the process proved that there is such a thing as a dumb question), then left the microphone for the next guy. Then the campus cops arrested him. There was no disruption - just rudeness.
This sort of crap reminds me of the nonsense the campus lefties pulled back in heyday of PCdom when I attended UT. Didn't like it then, don't like it now.
"Free speech protections are all about prior restraint. That wasn;t the issue here. There is nothing in the First Amendment that exempts a speaker from consequences."
You're not up to date on the case law are you?