His hands are still trembling as he turns away from the basin in order to properly yell at Childermass. Although, not really yell. The man's making nothing but valid points, which aggravates Strange even further. It was a stupid chance and yet what on Earth did Childermass expect him to do?

"And what would you rather I have done, let you leave so you could continue to shoot people? Stupid though it may be, it was still a chance."