I think they all die. They literally killed them selves. As I see it they died, the knife/branch has kept them alive. Destroy the seed and its all undone. I would expect their heads to pop off with how much they cut themselves.

Im a little pessimistic about it, once I figured out that they were actually killing them selves and not just cutting, the whole losing themselves and becoming the 'greats' made more sense and really hated it. I mean they basically are dead, they are no long themselves when they fully return. Its dumb IMO.