I'll go with in fear of his life
Fear no doubt is pushing the guy running......could be a double fear...Fear after he saw he shot the first guy in the head, as he was plenty anxious pacing while making his call. Perhaps more fear as someone told him to get out of there....even more fear when seeing he was being chased by thugs.
at any rate this is determined it happened....guys gonna have hands full defending himself with 3 guys down. Gonna get complicated as well....Attoneys will make certain of that...the longer they play the more pay.