Michigan Attorney General Mike Cox has reversed himself, saying Friday that Andrew Shirvell will face a disciplinary hearing for attacking gay student Chris Armstrong.

The Detroit Free Press reported Friday that Cox will look into Shirvell's actions after all.

Shirvell is facing mounting criticism and calls for his immediate resignation after he appeared on CNN's Anderson Cooper 360 on Wednesday to defend his actions.

Shirvell began attacking Armstrong after he was elected president of the University of Michigan at Ann Arbor Student Assembly in April. He's criticized and belittled Armstrong at Chris Armstrong Watch, a website he runs, now sealed off behind a password protected page.

The University of Michigan has banned Shirvell from its campus. And Armstrong, 21, has filed a personal protection order against him.

Earlier this week, Cox called Shirvell's actions “offensive,” but defended his right to express his opinions.

“He's clearly a bully. Absolutely,” Cox, a Republican, told Anderson Cooper. “And is he using the Internet to be a bully? Yes. But is that protected under the First Amendment of the United States Constitution? Yes.”

Cox now reasons that the university's actions, among other things, justifies disciplinary action.

“Standing outside anyone's home in the middle of the night … is not an action he would recommend to any state employee,” John Sellek, a Cox spokesman, told the Detroit Free Press.

University officials and students have rallied to Armstrong's side. Its president, Mary Sue Coleman, decried the attacks in a statement: “As a community we must not and will not accept displays of intolerance.”

Nearly 13,000 people had joined the Facebook group We Support Chris Armstrong as of Saturday.

“Chris, your mother and I are thinking of you every minute,” Steve Armstrong wrote. “We cannot begin to express the pride we feel in your strength, intelligence and leadership.”