He left swiftly, Manxi departed in a fit of rage. This is not a situation where he could just 'sit and wait for death.' Even if he couldn't change the outcome, he had to try; how could he know if the result couldn't be changed unless he tried first?
This is the normal reaction when a person is pushed to such a desperate situation.
Now he understands that the competition for leadership during the Battle of Great Pardon was not less intense as he had thought; in fact, it was extremely fierce. His ability to stand out was indeed not easy, but now it's proven from another perspective that the real competitors never actually contended with him. If they wanted to compete, it wouldn't have been his turn. Anyone with real power could still contend with him if they wanted to.
