These facts are very different than those of the OP.
I'll concede that there is obviously a difference between the two scenarios, the main reason I mentioned hamilton is because although it was implied threat, she didn't directly threaten the truck driver with the firearm, so it was more or less still "display". My point was to illustrate that an action that seems reasonable at the time to one person may not be perceived as such by the law.
As stated before, specific intent crimes such as assault are factually dependent.
"Facts" are rarely the only thing that comes into play in the so called "justice" system. If a cop/prosecutor has a hair across his/her ass or a hidden agenda, (as is common in commie states like MA, or other anti gun locales) then facts sometimes can take a back seat to politics.
I know of one individual in Philiadumpia who put his hand on his holstered gun when a bum accosted him with a knife, and the "system" still tried to rake him across the coals, despite the fact that he was clearly in the right and the perp had a known history of assault/robbery attempts. He was acquitted but the legal battle was expensive and screwed up his life. It also bears mentioning that the individual is a lawyer and had access to the best counsel
possible in the area... but the whole ordeal did not go smoothly due to the poltiical agendas at play in the city. You can still be "right" but that doesn't mean the prosecution won't try to nifong you.
So stop the generalizations.
You might partake in your own advice and not generalize that any attempt to access a firearm will be perceived as completely benign by law enforcement or a court. (especially not in a commie state like MA).
To play devils advocate here, I know several indivduals who have had to brandish a firearm, and none of them have gotten in trouble... some of that is a matter of circumstances, though. Some police will actually give the
victim the benefit of the doubt, especially if the perp is nowhere to be found, etc. That said, I know of one case where a guy basically pulled a "hamilton" and was very lucky that the road rager he did it to didn't call the cops on him.
All this aside, I would not let the possibility of prosecution interfere drastically with how I might defend myself in such a situation, either. If the situation calls for accessing a firearm, then it is what it is, and any of us would just have to deal with it. You can really only pare the decision tree down to simple questions- anything more than that and then we end up compromising the ability to defend ourselves. And as the old saying goes, if you don't live to make it to the courtroom, what difference does it make?
-Mike