Yeah, but I kind of like that. Because it may not even be a easy redemption for him Djinn when she gets out of her ring may work with him. But, she will never trust him and Roundhouse knows how powerful she is he may be sleeping with one eye open for quite a while. Also, he took out the rest of the team by enslaving another member Damian may have forgiven him but I imagine the other members of the team won't be so forgiving. It's going to be awkward when Djinn comes back and he is going to have to look at her and know what he did and he is going to be squirming thinking about what she could do to him.
That's is why I want Roundhouse to stay on the team more than anything to watch him squirm knowing Djinn could get revenge on him at any moment.