Having someone as capable as Samael as an ally is something even someone like Derik would wish for, up to the extent that he even considered letting the archangel take Cyrus but only for a second.
Confusion, indecision, realization, and resolve!
These emotions flashed across Derik's hairy wolf-like face before he turned his attention to his guardian spirit who was waiting for Derik's reply with a weird look on his face which made Derik feel even more ashamed of himself.