Thanks Al, that was very abstract. 
Allow me to try again; YOU (alone) have a decision to make, based on what YOU (alone) have observed. Or did you consider the contact (YOU) observed excessive, dangerous, deliberate, intentional, intended to be otherwise harmful or excessive, or was it incidental to the action and DID NOT cause UNREASONABLE/EXCESSIVE risk, harm, or threat, to the intended defender. iT'S your DECISION, BASED ON YOUR UNDERSTANDING OF THE RULE & OBSERVATION.