The worst part about figuring this out is that Harry actually wanted to give him his soul back now, after years and years of being hunted now he feels the desire, the necessity, to save him. All these emotions and conflicting symptoms of borderline Stockholm syndrome were beginning to grate on his every nerve, even though he didn’t currently have a physical body, he was sure that Mortie had given him the ability to feel pain just to spite him. Thus he had to get away, the Toms stayed behind but Mortie decided to follow him.