The only way out for Vlad is to either die permanently or to somehow to contrive for the Organization to save face. Anyone in the Organization with knowledge of Vlad and the circumstances under which he went rogue will understand that he did it for personal reasons; i.e., to protect his wife, not for personal gain. There are reasons why the Organization has the unwritten rules about keeping violence away >from an employee's home and the were-gild style system of life insurance to compensate the family members when an employee dies. As a kind of idealized Mafia, the Organization respects and protects family. The whole mess that ended with Vlad turning informer began with a Jhereg boss who broke the code that says that family is sacrosanct. (Of course, the Organization would say that Vlad broke the code himself by not controlling his own family. Everything's relative...) That won't excuse Vlad in anyone's mind but it may mean that if The Demon wakes up to find Godslayer poised two inches from his left eye and an ex-Jhereg Easterner telling him "I'm about to make you an offer you can't refuse" that he'll listen and even honor whatever agreement he's being coerced into if it looks like it will profit the Organization in the end. Great weapons aren't neccesarily a big secret, just something that doesn't get talked about outside of the social circles of the owners. It's only a few years since Vlad left, a blink of an eye to a Dragaeran. The whole thing could be settled by a convenient lie. The Council spreads the news that Vlad has returned with not just a Great Weapon but one of the Greatest of them all. They welcome him back with open arms and smirk about how this was the plan all along. That turning informer was a cover as part of a bigger plan to increase the power of the House versus Houses like the Dragon that had multiple Great Weapons in their arsenal. Now House Jhereg has an assassin in the fold who can even assassinate a God. With the right spin-doctoring, it could sell. Alternatively, it could be a matter of Vlad arranging his own death (or a facsimile thereof). We've already seen Aliera stabbed with a morganti weapon and survive. When Aliera was nothing more than a soul in a staff, Sethra implied that the Necromancer could create a new body for her. Vlad could hide the existence of Godslayer from the Organization entirely and arrange to be "killed" by a morganti weapon. Even if he was made unrevivifiable to boot (should be considered a waste of time after a morganti killing but possible nonetheless) his friends should be able to bring him back. At that point he changes his face or goes back East or whatever. It comes down to learning what sort of life Vlad wants to have. If he wants to live openly in Adrilankha then he'll have to make peace with the Organization, convince the Council that they CAN'T kill him, and do something that shows the entire House that his turning informer was actually a good thing in the end rather than a bad thing. Given that the Council has shown it's willing to destroy the Organization and rebuild it rather than lose face, any plan Vlad comes up with has to be one that allows everyone to feel like the Council was actually doing something clever by letting him testify. Otherwise, his life isn't worth a plugged nickel. I don't imagine that the unwritten rules apply to a traitor...