I was appointed as a Regular Pioneer in a certain congregation. In that congregation, a very obese male pioneer seduced a nice looking married pioneer sister who had two teenage sons. Her husband was a MS. Both were Df'd. I felt really bad for the husband and the teenage sons. Total embarrassment.
Later, the P.O. announced that one young sister was the only teenager in the congregation that had not not been before a judicial committee. He made this announcement right after one of her meeting parts on the TMS. Within a week or two they disfellowshipped her.
I left the congregation without saying goodbye to anyone and moved to another city. Shortly thereafter, the PO was disfellowshipped for cheating on his wife.
Within 4 years, I was free of the cult. That one congregation was a significant part of my decision to leave.
Any congregation scandals still stick in your craw?