Thats great! There were several I would have hated to be left like that, with them probably not realizing what was wrong with them. To me, they didnt seem to know that their views had changed to the Dark side and it would have been sad to leave them turned and alive.
I dont remember ever reading that it couldnt be healed for sure. I do know that one of the Forsaken, Graendal I believe, said that Nynaeve had discovered how to heal/delve sicknesses of the brain that wasnt even known in the AoL. So I would hope this would mean she might be able to heal that...
Tazren has a good point. I also feel that Caduane will be an interim Amyrlin. She is going to be the stabilizing force as the White Tower rebuilds itself and the world learns to deal with all the changes that have come to it in the past couple years. I see her continuing most of what Egwene set...