No, but he did make the choice to attack a man with a gun when there were other options. Had he run around them and attempted to keep going this might be different. Had the shooters not brandished weapons and instead just followed things would have been different. Stupid decisions all around but the shooter certainly bears the vast majority of responsibility here hands down. Which is why I believe he'll be charged with manslaughter and rightfully so.
Felony murder is a crime in Georgia. They may not have intended to kill him, but they assaulted him with a deadly weapon, a felony. During the course of committing that felony, they killed the victim. They also committed old fashioned murder, but if we are playing prosecutor here, felony murder is a no brainer.