I'm surprised to find myself feeling conflicted in thinking about this situation from that point of view. On the one hand, the people making decisions at the NSAare acting like spoiled brats whining that Daddy doesn't love them anymore because he showed displeasure at their misbehavior.
On the other, our fucked-up economy has left a lot of people desperate enough to hold onto their jobs (especially if they have dependents to support) that I can easily see an average employee letting themselves believe their superiors' reassurance that their orders were legal/necessary or that their role is so minor that it didn't make a big difference. It's also very possible that many employees were chosen specifically based on a lack of knowledge about our rights, so they didn't even realize they were doing bad things. Either way, after all of those years of reassurance, having their leader turn his back on them to save his own ass when they're under attack would suck beyond belief -- and Ican only feel disgust for that behavior on his part.
We all like to believe that we wouldn't be as 'weak' as the people that violated the Constitution/Bill of Rights as part of following orders, that we'd stand up to our boss/superior or maybe even pull a Snowden... But we also all like to believe we wouldn't cause horrible harm to others through abusing power or following orders, and virtually all of us are wrong.