Claims of minister whose contract with his church was terminated for cause due to lack of spiritual leadership do not present an issue for trial, as the question would impermissibly entangle the court in religious matters, and the church has a freestanding First Amendment right to select its ministers.
http://www2.ca3.uscourts.gov/opinarch/173086p.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.