I know of 2. One of them is a MS now due to the comfort of the "two witness rule". I know of another who used to be a PO but now does not serve as anything. He is allowed to carry the mikes, give parts on the school, read for the WT study and BS meeting. He can also pray for others.
I also know of a man who abused his son (not sexually, just made me think about it and made me mad) so harshly that he committed suicide. EVERYONE who knew this family knew he was abusive and did nothing. They all knew that he had pushed him over the edge and now that man is a Local Elder and his daughter is off df'd somewhere. I wish I could find her and tell her how sorry I am for what she went through. Maybe one day.