First off, in many cases, you cannot act like the police and draw down someone. I tend to operate under the idea "If I clear leather, bullets are about 1 second behind." If someone did something within a second of that caused lethal force to no longer be an option, I may use my weapon to hold someone.
In your situation, I can't see where lethal force would have been justified. You cannot shoot to protect property you may only shoot to protect you or innocent 3rd party from grave bodily injury or death. In that case, no weapon was need, just you going get off the truck buddy.
What were you there to repo anyways that was worth 65 dollars?