"You was human that time too?" Crowley's reply sounded more tired than scarcastic that time. Even if I had to admit that the idea of Hastur without eyes is tempting..."

The demon was trying to keep the knee in one piece with the force of his will while they walked -or more exactly while Corinthian dragged him-, and as long as he didn't remembered that it was totally ruined it did the trick.

At Corinthian's words, he caved. He knew he caved. That did not mean he had to show that he caved. Externally at least. "If your evil beast pull off more of my feathers I will throw her out of the window, I already lost a lot of them."