For those who think Lisbon is allied with or is RJ, this idea seems a little ludicrous since RJ had Lorelei tell PJ, that for PJ to become a friend of RJ, he would need to kill Lisbon.   PJ faked the killing and took a cabbage in place of Lisbon's head, but by then RJ knew the killing was a fake.  Also, if Lisbon was RJ's friend, then why did O'Laughlin shoot her, since he was RJ's friend and should have known other friends of Red John.  So if RJ is your friend, who needs enemies.