He snorts, the frown easing up a little, like Glass had told a joke or something. "So you think it prudent, then, for me to put you in an even more dangerous position?" he asks blandly. "You would prefer that I pretend to be even-tempered only to send you to medical when you behave in a manner I did not anticipate?" It was more a warning than a threat, is what he's trying to say.