There is a distinct magical 'pop' in the air, as the circle is broken, and the incubus steps out of the circle. "My binding is broken, and I will not act against you; I cannot return home until either the wizard is destroyed, or dismisses me, though if you prefer, I will attempt to leave here, as quickly as possible." He certainly seems genuinely intimidated by Isixam, and likely for good reason, and doesn't want to get on his bad side.