User blog comment:B214/Talk About What You Want! 3/@comment-16281343-20150602164844/@comment-3965848-20150603080541

That just means with no one to force him, he can choose for himself weither or not to go in JD. Plus when he first wen't JD it was from his own dark emotions, not the past possessors, whose to say he won't get those negative feelings again and go berserk.