Years ago Rabbi Mordechai Willig was stunned to learn that a man in his congregration had refused his wife a get. He immediately convened a beit din and they instituted Rabbeinu Tam’s strictures on the man. The other congregations in the neighborhood were informed and every single one cooperated. I know someone who was ordered by R’Willig to disinvite the man from a family simchah.
A few months later, the man gave the get, and R’Willig told the gabbai to give him shlishi the following Shabat morning. R’Willig then developed the RCA prenup as a way to prevent this from happening in the future. No rabbi in America should ever marry a couple without the prenup.