Naolin theory

After reading Onyx Storm I think most of us have come to the conclusion that Naolin is venin and turned while saving Brennan. But if Naolin turned to save Brennan out of love (as Xaden turned to save Violet and Sgaeyl), can he be saved too? I think that the remaining shred of Xaden’s soul is in Violet’s wedding ring, as anyone who enters Dunne’s temple who is undeserving (aka venin) will have the soul ripped from them. We know this from the excerpt before they visited Umbriel, I believe. So, if Xaden’s soul was ripped and put into Violet’s ring by Dunne, could the same not be said for Naolin and Brennan’s scar? I don’t think that Brennan is a “wyvern” as many believe. Panchek has already been exposed as the rat, and Brennan is avidly fighting for the rebel cause. Theophanie also says during her fight with Violet that it takes them a lot of time to create wyvern, so Naolin wouldn’t have just been able to conjure up a new Brennan. Brennan has also been living under wards, which wyvern cannot. All of this leads me to believe Naolin’s soul is stored in the rune on Brennan’s hand. The reason we don’t know much about the rune scar is because Violet is bad at runes and wouldn’t be able to recognize which one it was, as it was probably far more complex than any she can produce. Will we see more of Naolin in book four? Will he be saved? I think Xaden and him will work together to take down the venin from within.