Oh, I would just think it's a bug, nothing to do with the lore. It's just a miniature version of him, after all. I believe he left the legions because of an explosive accident that nearly killed all his warband and left his right hand mangled.That... would make him hard to replicate... but I can see why he had it rough in the legions. You think he'd of joined the Olmakhan if he'd lived? Yeah he had the whispers but still
As for him joining Olmakhan... I think, 50/50. He seems the type to want to travel and see the world, so if he survives Claw Island, I think he'll set off and explore, while dealing with the dragons first.
At the same time, I don't think he'll be curious enough to seek out the whole Wizard Tower (SOTO). By that point he'll have accomplished the goals he set for himself, fighting off the dragons ; perhaps he'll settle down by then.
I have a feeling he is not going to like dealing with Smodur...