Personally i think it makes sense and was a good move. David and Deven asked Chris to not tell anyone especially wardog. And what does he do, tell wardog. Proving to David and Deven they can't trust Chris. He's a physical threat, and can't be trusted. So now they can say hey wardog told you you can trust us. If they went with Wentworth, then wardog now knows he can't trust David and Deven, and David and Deven know they can't trust Chris.