Since Steve is six feet under you'll never know if the government originally pulled that sealed NDA letter much earlier, as stated earlier plenty of companies/upper-management were forced into gov't spying or face jail/treason charges. You can throw around calling Tim(& other CEOs) a hypocrite but what would you rather have happen either Apple cease to exist in 2007-2012 or a government agency seizing the company/nationalizing by firing the board of directors until finding a puppet CEO/board?
I highly doubt any company would cease to exist denying something that was against the US constitution, to begin with. This is just an excuse that they have to make, for marketing reasons. The newspapers that posted Snowden's leaks (Guardian at first, and then with the cooperation of NYT) didn't cease to exist. NSA would never dare to force the richest company in the world (aka apple) to close cause, if they did, their actions would be revealed (remember, nobody knew anything about the matter back then) and Snowden's leaks would be nothing compared to the waves of reactions such an event would trigger.
Don't get me wrong, here; Tim didn't do anything worse than any other IT company (of course this does not make him innocent, as well). It's just that he didn't do anything better, either. And, personally, I would expect more especially from apple. Have you ever heard or seen apple's "1984" ad shown at first Mac's presentation ? It was about the "bad big brother" (presumably Microsoft) that apple would rescue the users from.
Who could have imagined back then, that apple would now be part of this "bad big brother"...