Cafe Society MPSIMS: Gimme-Shelter Era Lone-Knifeman Theory @ Altamont Holds-Up

From the CBC

Wow, fascinating… thanks.
Perhaps we should clarify that Mr. Hunter was clearly aiming his gun at the Stones on the stage, and not at the Angel who stabbed him. Is it technically “self-defense” if you prevent, by violent means, a supposedly imminent crime against a third party?