Seems like a pitiful waste of scum. I am quite certain that he can do us no harm at this point, but the coward is not beyond telling his bretheren of our presence.
"Cease your Gibering, dark one. You may have the opportunity to escape with your life - your wolf was not so fortunate to be granted this bargain. You shall be released and sent home to your own kind - where you are to tell them that a bear had slain your wolf on this night. You are not to mention our presence, nor our direction of travel. Our mage has already placed a scrying spell on you, and we will be always watching. The moment you choose not to comply, you will burst into terrible flames. Your alternative is an immediate death. Choose your bargain quickly, or I shall choose for you." By the sun, I pray Nisos is persuasive enough to follow my lead.