The university has a code that prohibits harassment or discrimination based on sexual orientation. As much as I disagree with the label he used, I don't see how his actions fit either harassment or discrimination.
"I don't see how his actions fit either harassment or discrimination."
I believe that speech alone can be considered harassment. I know that in work-place sexual harassment cases, a supervisor need only verbally harass an employee to be found guilty of sexual harassment.
And after your comment is a quote wherein he says that he was referring to behavior.