Suppose it's a bit off-topic, but would Steve have fired Steve? I suppose the less interesting but more likely answer is he wouldn't have worked for himself.
From what I've read from the book, it looks like Steve would have loved to have another Steve in the company. I think he would have liked someone who thought the same way he did.
Steve was very mercurial: at one point, he would think someone a saint and at another a devil, and visa versa. I could see that pattern be very explosive in dealing with someone like himself.
Steve wouldn't have fired Steve after all there are plenty of mini-Steves at Apple right now e.g. Scott Forstall, Eddy Cue.
He respected people that were strong enough to stand up for what they believed in.