Whatever your decision, should it lead to injury or loss of life you will get your opportunity to explain yourself to the Court. If they side with you - you go free. If not, you go to jail - potentially for a long time. Either way you live with the knowledge that your actions led to the death of someone who "might" have been trouble, or might not.
You can construct fanciful situations as you like. Eventually you will get to a construct where I will agree that I would lift & flee. If in doing so I kill someone, then I am going to have to face a Court and explain my actions.
With no more information at my disposal than the newspaper articles, in his situation I would have shut-down.
No sticks.
No stones.
Only threatening behaviour was to "stand in the way"
I would have shut-down and he would be alive and I would not be in court on charges that could lead to 10 yrs in Jail.
If you see it different - not a problem for me.