It may very well be that Myers is not high on the food chain. That's irrelevant - if he is acting as an advisor to the US government, if he is being paid by the US taxpayer, and if indeed he is a US government employee, he should have had enough sense to not say such inflammatory things. The State Department shouldn't just disown him - they ought to sack him.
Regards, Ivan
Agree, but we are talking about State. What diplomats ought to do and what they will do is often - if not always - two different things.
BTW that does not apply to John Bolton, which is why I like him, and why he will never be confirmed by the Congress.