Roleplay Skittle
Eternally Awkward
That's if he has some goodness in him. Hmm....Maybe once Renee shoots her arrow and the other guardians power up Lydia's exorcism, James can use his soul trap spell to keep the evil/goodness part for the others to save/destroy it....
If there is no goodness, they can just get his power. Strip him of all his power and give it to the pieces of Draco.