Sam,
I don't think that sounds crazy at all. I think if it was a schizophrenic thing, you probably wouldn't be aware of it. I would guess that, since you're aware of it, that it is a genuine part of who you are. I think we all have different voices inside us, some of which conflict with us and each other.
I don't know what that part of you represents, but the first thought that came to my mind when I read about it was that it is empathy for the child that you were. I think I had something similar. I can tell you that when I was a child, I wasn't allowed to empathasize with myself, so that's what I think of when you say he runs away.
When I start to empathasize with my past now, or when I feel anger over what was taken from me, I begin to hear parental voices telling me things like, "You didn't have it that bad. It's time to move on. I had it bad when i was a child. etc."
I really think that all of those voices we have inside of us are tools that we use to make sense of the world.