I will never be able to root for Duquesne, regardless of who is coaching there. Especially after this past season.
But hypothetically we can ignore the school. To me this is no different than if someone like Getsy or Frye went to coach some random Sun Belt school. If they had success, won bowl games and conference championships while the Zips continued to be mediocre. Would I be happy? I'd be jealous and pissed that it wasn't happening for us.