Yes, it is a sad and rather sick commentary that, as this man said, he had to make his life-or-death decisions in fractions of a second, and now he gets to be armchair-quarterbacked by creatures with mostly political considerations in mind. It would appear that his actions were completely justified and sanctioned by the events he found himself thrust into. I hope his after-effects subside and he suffers no legal consequences.
As for events in Nebraska, it's of course impossible to say. At the very least, it's always good to have some chance versus none, and to go down fighting, rather than die like a sheep.