Okay, so if we follow this train of thought, once he realizes what up then he's going to want to, of course, fix himself. The soul is the bank of a person's memories and once they die, it breaks up into pieces. Bastions already managed to keep a person's soul from breaking up and leaving their body, so let's say he wants to do the same on himself. Problem is, he can't remember how he did it in the first place, only that he did.
Now he needs to track down Duane and rediscover the methods he used.
I like this idea, but I admit a huge problem with it is that it would have to assume that he didn't keep any kind of notes on how to do it.