On All My Motions

In Dustin's first appearance he does not throw himself into the fight in defense of others and he's careful of his own safety. I took your description of his attack on grant as an indication that he'd been fighting demons. I extrapolated, perhaps erroneously, that he'd been doing so alongside Katie. The fact that he would do so, despite the spell he believes to be active ensuring he won't get what he wants, made me think better of him.