I'm in the camp that Senator Wyden asked the question in such a way because he knew what the answer was going into the thing.
At this point, you need to start looking at everyone as a suspect. It's an uncomfortable notion, we might not like it, but it's a reality pill ya gotta swallow.
Maybe it's the same thing all presidents learn their first couple of months in office. Maybe it's a memo that gets placed on the desk in the Oval Office by some shadowy figure. Whatever the case, the honeymoon is over, folks.
That's the problem with centralization, with representative democracy. A single point of failure is a bad idea. It's time for participatory/direct democracy.