Check out menace 2 society. It’s former Ohio State coach Zach Smith talking about his experiences coaching and recruiting. His doesn’t hold any punches and tells some really hilarious stories about some coaches he wasn’t a big fan of. Mentions Mullen a few times, but nothing bad, other than he wasn’t friends with him and he was kind of a jerk. The guy may be a pos, but it’s a really entertaining listen and gives you an idea what it’s like behind the scenes