Jehovah's Witnesses don't see what goes on in private at judicial committee meetings.
As long as they swear that the Watchtower is God's organization and do everything that is required, all they see is love, joy, and harmony. They are in spiritual paradise.
However if they step out of line, they see a different facet of the Watchtower organization they didn't notice before. Suddenly the decades of faithful service to the organization means nothing. They finally see they were never free. They are slaves of man.
Through disfellowshipping and shunning , JW's discover they are not loved because of who they are. They are loved only when they are serving the organization with ALL their heart, mind, soul, and strength. Luke 10:25-28 
Now that they disagree with some things, the tables have changed. Witnesses who ask too many questions are 'marked'. Reality sets in that spiritual paradise was merely an illusion. They were never free to worship God with ALL their heart, mind, soul, and strength. The organization demanded what is reserved only for God.
1. Disfellowshipping - The good, bad, and ugly about about disfellowshipping and shunning.
The Bible says this. "Teacher," he asked, "what must I do to inherit eternal life?" "What is written in the Law?" he replied. "How do you read it?" He answered: "'Love the Lord your God with all your heart and with all your soul and with all your strength and with all your mind'; and, 'Love your neighbor as yourself.'" "You have answered correctly," Jesus replied. "Do this and you will live." Luke 10:25-28