I don't believe there is nothing that can be done. Does anyone really believe that if the tables were turned the University would not fire or otherwise harass the professors. If the wrongly accused were blacks and the victims white and the professors did the same thing I believe Duke would have dumped them faster than you can say hate crime. There is always a way.
I hear you and agree that actions should be taken, they could be shunned by many but the ones that are tenured are unfireable and they know it.
Look at what Ward Churchill has done and how he has strung the process out to fire him and his offenses are clearly ones a tenured professor can and should be fired for, palgiarism for one.