Why does Folger give Muir a confused look in this scene at the end of Spy Game?

It's the last 5 minutes of the movie. See clip @approx 0:08.

Someone in the room: "Are we done here?"

Harker: "Non-disclosure agreement."

Muir quickly signs the NDA.

Folger: "Aren't you gonna read it?"

Muir: "Read it a thousand times."

--> Folger makes eye contact with Muir and looks confused.

Harker: "Aiken... will you escort Mr. Muir from the building?"

Why does Folger look at him that way? It's as if Folger was thinking that someone like Muir would always read the fine print. That doesn't make any sense to me because Muir really would have seen thousands of these after that long in the CIA and I'm sure they are all mostly boilerplate.