I think that that girl that RJ killed last episode worked for him and was willing to 'dedicate her life to him' like a lot of the others, I also think that RJ knows about the organisation within law enforcement and he is tricking Patrick by making the girl say what she said (also would RJ really leave one of his victims alive?) so now he is a step ahead when Patrick thinks he has him. Throughout the whole series RJ has been 'the smartest guy in the room', why would be accidently show his compromising tattoo? why would he bug CBI? Why would be allow himself to be controlled by Patrick Jane? Red John is playing us.