anyway, just throw out my opinion on the series of events that lead to his sainthood...(like what i picture in my head)
he was probably released sometime after the neravarine was. after he learns of the neravarine events, he finds the neravarine seeking some task he can do to aid the land. the neravarine, recognizing him as the first person who was nice to him on his journey, asks him to rid the land of the accursed pestering cliff racers.
after much hardship, he succeeds and is made a saint. after the neravarine.....mysteriously leaves before the oblivion events.....jiub picks up some of the slack in defending morrowind and when the gates open, he gives his life to protect the land.
ah, its pleasant to think about......the story, not the death, lol