I doubt he will post one of those again without permission. Wilhelm also told him off. He is a very emotional teenager, it's been so long since Istredd was one, but the mage teenagers were different. Istredd agreed with the talking to Jack was given, so he trusts that is a mistake not made again.

That sounds like a good thing to me, you obviously can't be there to try and control the situation. He doesn't know why there is disapproval of the angel although Lucifer has all kinds of feelings regarding people from his world, petty or otherwise. I would say since we are separate from the situation now, they can handle their own issues, but if the Mark has the ability to move people, the logic is to get rid of it. Peace of mind, especially for you. He can tell the Mark bothers him.