artbrooks- "Mr. Williams violated the terms of his contract...."
Can you post the terms of his contract? He was stated to be a contractor.

Ms Schiller, NPR CEO- He" violated the news code of ethics"- What is that code? It has not been stated in any of the above, or on NPR.

Was he fired not because of violations but because they didn't like him, or because of his associated employer? In my opinion, yes.