We all pontificate the what ifs but in the end the Legal System will determine the outcome.
The accusatory nature between FReepers with differing opinions that happens in these (now) multiple threads tells me that nobody really knows what they would have done in this kind of situation.
I cant imagine physically attacking someone arguing with my Wife and I cant imagine shooting someone who shoved me to the ground. Just because I cant imagine it doesnt mean I might not do something I will regret for the rest of my life.