They were upset about a decision the pastor had made. The leadership was in support, but they were not.
So they decided to skip Church worship for a few weeks. They would stay home. That would teach the pastor. They would withhold their time, money, and service. It would serve as a bit of punishment for the pastor for not doing what they desired for the Church.
They are not alone. Other people have quit the Church altogether. They reasoned if the Church would not do things their way, they would just quit. Sadly they did not go to another Church. They just left, and every time the pastor sees them, he will be reminded of his mistake that led to their lack of support.
You must know that skipping worship or quitting Church is not punishing the pastor. You are only punishing yourself.