I have heard of it happening twice, I was not at either. The first was in the 1970's, in South Carolina. Mom said that it happened because of something called wife swapping. The elders were all disfellowshipped. And the other was in Iowa, don't know of the details, but one JW sister who was there said that the elders were teaching something other than what the Watchtower in New York was instructing. The elders were all disfellowshipped also. Woop I'm bad, the congeration at Iowa was not dissolved, but all the elders, but one was removed. And he was the one sent in as a spy to see if the acuations were true or not.
You don't remember the town, do you? Gilmore City maybe....? ~merfi