This is not a free speech issue. This is a contract dispute issue. This is not an employment issue. It is a contract dispute issue. From the circumstances, it might be assumed that whatever speech or actions Phil engaged in while in his Church was not specifically limited by the terms of the contract or he would never have signed it. Contracts can only go so far. While it is possible to sign a contract that prohibits attending a particular church, that contract would be void as to public policy.