I was thinking more that he did indeed lose it, i.e. that he made a mistake/forgot, and didn't want to own up to that, not that he was strongly opposed and lied about it. But looking back at my comment, the politics line doesn't entirely fit with that interpretation, so I clearly didn't think it through. :P But yeah, I agree that if he felt strongly about not wanting to do it, he wouldn't have bothered to lie.
Re: Moses Mendelsohn (aka Nicolai, Volume I, b)