The employee in question tried to start a conversation by posting a memo on email to other people - so starting a conversation the way they are usually started. It was abruptly ended.

Anyways my main point was the breach of code of conduct is just the technical reason he was fired. If you read the line item he was fired for, its clear its vague enough to be used many many different ways. I don't think its productive to focus on whether he broke some rule somewhere when the whole situation that led to the firing is known to us.