Lucifer waits to release Dean longer than strictly necessary, not above letting Dean worry that he was going to be left as he was for Sam to find. But then, after what has to be an agonizing eternity for Dean, Lucifer snaps his fingers to remove the chains that kept him attached to the desk although leaving the collar and cuffs where they were along with leaving the chain for the cuffs on Dean's wrists intact. "Come here and kneel."