This 2004 interview by Nancy Grace (on CNN) with Bernhard Goetz is of interest. One highlight is this comment by Goetz:
"They could have or probably would have beaten the crap out of me. And I would rather shoot all four of them than even have them get a little -- the people should not take crap from other people."
I agree one hundred 100% with the guy. The prollem as I see it, is the Castle Doctrine is not the universal law of the land.