I have seen this. I bet a lot of others have, and its strange how so many are POWERLESS to do anything.
One sister I know was married to another JW. He was unfaithful, she was crushed, he wasn't disfellowshipped, she forgave him, he was cruel, finally she committed adultery to get out of it. They divorced. Now they are in separate congregations. He starts to trash her name to all his friends, and his new girlfriend, who is a Witness. Since he has a strong personality, anytime one of the elders says something to him about it he says, "WHAT ARE YOU TALKING ABOUT? SHE IS A LIAR. HOW DARE YOU ACCUSE ME. YOU COULD BE REMOVED FOR FALSE ACCUSATIONS!!!" No one in that Hall dares stand up to him because he LOVES those meetings in the back room where he raises his voice, intimidates possible witnesses, and gets his way talking about how "He wants to focus on the ministry and people are trying to stop him."
Another couple I know did something similar. They would hang out with someone in the Hall for awhile, introducing personal information about brothers and sisters in the Hall under the guise of "worrying about their spirituality." Then, when the person said they didn't feel comfortable about that, they would go to the elders and accuse THEM of gossiping. They would quote scriptures, be very evasive when questioned, talk about Jehovah, and yell at the person who said they were gossiping. Even the circuit overseer couldn't control them.
They use their STRONG PERSONALITY to intimidate those that are trying to be "obedient" to the Organization and be "humble." They imply that they are the spiritual ones, when in reality, they are just the loud, pushy ones who derive joy from controlling others.
The older ones stay away from them, and tell the younger ones to "wait on Jehovah." The controlling ones have get-togethers where they exclude those not in the group. They comment at the meetings about gossip, and how bad it is. If someone accuses them of gossip, they counter-accuse them of SLANDER. They are VERY NICE to certain elders, and NEVER gossip to them, so that the elders are in disagreement when they meet about them. The elders would never admit that someone is controlling the congregation anyway, because the elders are the ones who give the talks and conduct the meetings, right?
Have you ever seen this in a congregation? Not the regular mean gossips that every congregation has, but the CONTROLLING, ACCUSING, POWERFUL gossips that rule the Hall and smash down those with weaker personalities?
Yes, this applies to both brothers and sisters.