If you're only route is forward, through the man who is smashing his way through your car so that he can "knife" you, and then most likely "knife" your children too, is it unacceptable to take that route? Then the question is, did he have another route available? I'm picturing a car in a standard parked position where one end of the car is generally against something... a wall, another car. I.e on a driveway for example.
But I don't know that, as usual there isnt enough information for us to make this decision, and say that the judge was wrong.