I think Bakker has been quoted as saying Cnaiur's storyline was finished at the end of TTT. I loved the character, but don't really see a place for him in the existing narrative. His story was finished, he got revenge on Moe Sr., and I don't believe he would have gone back to his people even if he did live. His tracks had diverged too far from their custom, and I don't think Cnaiur felt there would be any point in going back. There was nothing for him there anymore. His journey ended on the edge of his own knife. Maybe there's a skin-spy running around pretending to be him, but I think the man himself is dead.