There is a science behind facial expressions. It's not exactly like T.V, of course. It's difficult to do a frame by frame, but anger and contempt flash up on his face for a split-second. Then, as Xanthippe noted, he has fear in his eyes.
I'm no scientist, but I am a very observant INTP ( bordering on INTJ). This is merely my opinion after reading up on micro-expressions. I think he's furious that anyone would dare to stand up to the WTBTS, while simultaneously being scared shitless. He is afraid the jig is up and that we ( the viewer ) may be able to see that he is a liar.
He's the kind of guy that I would call a pussy, right to his face, then I would turn my back on him. He is a coward and a liar. Any deity who supports him is an asshole.
DD