Since you're able to move the vehicle. Back the fuck up!
If you're unable to do so and the MOB engages you.
Brush up or read the C/R.S regarding Use of Deadly Force. YMMV
18-1-704. Use of physical force in defense of a person1. Except as provided in subsections (2) and (3) of this section, a person is justified in using physical force upon another person in order to defend himself or a third person from what he reasonably believes to be the use of imminent use of unlawful physical force by that other person, and he may use a degree of force which he reasonably believes to be necessary for that purpose.
2. Deadly physical force may be used only if a person reasonably believes a lesser degree of force is inadequate and
a. The actor has reasonable ground to believe and does believe, that he or another person is in imminent danger of being killed or of receiving great bodily injury; or
b. The other person is using or reasonably appears about to use physical force against an occupant of a dwelling or business establishment while committing or attempting to commit burglary as defined in sections 18-4-202 to 18-4-204; or
c. The other person is committing or reasonably appears about to commit kidnapping as defined in section 18-3-301 or 18-3-302, robbery as defined in section 18-4-301 or 18-4-302, sexual assault as set forth in section 18-3-402 or in section 18-3-403 as it existed prior to July 1, 2000, or assault as defined in sections 18-3-202 and 18-3-203.