JJ with all his many disabling faults and inexcusably disrepectful, thoughtless, unkind and bordering on abusive treatment of those known to him as "Family", in this particular instance along with his already insecurities and doubts he's faced with the fact that Brad his previously known as father is not. To expect any other reaction from JJ would be totally unrealistic. Did he over react? Duh? It's JJ. Of course. Was it justified? In my opinion, yes indeed. Question. Was Wills anger at JJ misplaced? Shouldn't Brad have bared the brunt of anger for his deception?