your boss made a huge mistake in promoting you because you were bad at your new job and he had to humiliate himself to his own bosses by admitting he fucked up royally by getting rid of the guy who used to have your job? and you were faced with the tough decision of being demoted but still being paid your inflated salery or taking a new job and accepting a multi-million dollar payout from your old employer? and by talking shit about your company you were possibly jeopardizing the multi-billion dollar deal they were currently involved in?
I am currently dealing with braindead entertainment "managers" on a daily basis, so Conan's and Dave's commentary on this situation are very timely for me personally.