Not an ambush... but I agree with the author, it's a hot water tank. If you think it's gonna happen again I'd set up lots of trail cameras. I'm not gonna wait around hoping someone breaks into the house again. Regardless of legal troubles (anything to take another gun toter off the streets) the author's right, he didn't exactly increase his odds of survival by waiting around. It's his prerogative but I'd watch on a wifi cam, sitting at home, 911 on speed dial. I don't think the guy should be prosecute but it don't think he's a genius either.
Going back to the house you JUST robbed, THE NEXT NIGHT, has got to be the dumbest idea ever, though. That robber's definitely a Darwin award candidate.