An interesting article on the dynamics between Bd and EM. It suggests that he really really didn't want to settle and made the issue an ultimatum. When put as an ultimatum, the Bd has to do what is best for the co in the long run. If anytime the CEO isn't getting what he wants, and he threatens to resign if he doesn't get what he wants, and the board is committed to the position that the CEO leaving would harm the company worse than just about anything they could be asked to do, then the board is pretty much a non-entity -- they have to cave to just about anything the CEO wants.
But when the CEO is executing and has proven his value to the company and has the leverage to make those demands, that is probably as it should be. An interesting governance dynamic.