I had a similar experience to yours when I went to a meeting after having faded for two months. It was disturbing how weird and programmed (automated?) the people in the hall were. Their words were chosen carefully. Their laughter was fake. They wanted to have us sit towards the front and i brushed the attendant off and sat in the back. After the meeting I sat there watching these strange, alien-like people interacting with each other, bobbing their heads like doves (they all bow to each other three times a minute here in Japan) and bleeting superficial platitudes and small talk.
The bible reading that night was Deuteronomy 18-22. The irony of 18:20-22 was lost on all the sheeples who attended that night, but it was not lost on us. Never went to another meeting after that...