I'm sure most of us have such experiences of the difference between what a brother/sister said on the platform and what we knew in reality.
I remember a Min.Servant and Pioneer and married, giving a talk on what we should watch on TV and what films are suitable. After the meeting I was talking to him and he was going on about this film he had watched. Something back of my mind niggled me. When got home checked the film. Yeah, it was on late at night and was described as being very violent, with sex and nudity. About a year after I had left this brother was disfellowshipped. It seems that on his window cleaning round he was doing more than just cleaning windows for a couple of the women who were his customers.
We also had an Elder, a walking book of WT rules. Kind of guy who if a brothers hair was touching hs shirt collar would give a lecture on long hair, or if a sisters skirt was half and inch above the knee she was on the verge of prostitution. Always used his family for demonstrations or items on platform. All sitting there correctly dressed. How they did family Watchtower etc, field service, etc etc.
Yet those of us in the know, knew his two daughters had probably had sex with most young brothers in the KH. They were both pregnant when they got married, and yes allowed to marry in KH. The oldest son was using cannabis, got caught in bed with his female cousin, he later ran off and married a lap dancer, came back, but now gone. Other son seemed an angel at the KH, but in school was a foul-mouthed brat. Later heard through grapevine, that he had been caught in bed with another JW brother. The mother through all this was knocking the Prozac back and hitting the bottle.
Yet through all this Brother Elder would get up on the platform and tell us how his family did this or that in "Jehovahs service". He was never pulled up on what his family did and continued to be an Elder until about 6 months ago when he resigned. Why? Because he was caught smoking!!
I know of so many brothers who put on their JW suit and briefcase, or sisters in their nice sensible dresses. Where the epitome of WT correctness. But when they took them off and away from their brothers and sisters....stand back.