First of all excuse my bad English..
My opinion is was that Ray is Red John, but after watch this episode i think that RJ maybe is Partridge, i don't now maybe he fake his death it's why he hire a private investigator to bug the CBI, if Ray was RJ so he could bug the CBI easily, he have access to the office even if the team is not there,so why not Partridge is RJ and he fake his death and he is waiting for Jane to finish with all the remaining suspects...

i think that the creator know that most of the people think that Ray is RJ so what he is doing is that he focused on his phobia (Spider) and in the last episode when the visualize guy says that Ray left and he has something to do or whatever in the same time when RJ kill the girl, and pleeeeeeease what do you think when RJ draw the smiley face on Lisbon face? the response is to make Jane confused ( i can't find the word)  and not check Partridge body, this allow to RJ accomplices to came and take his body (RJ=Partridge)

So Bruno heller is trying to make peaple forget Partridge and when the time come BOOOOOOOOOM, holy shiiiiiiiiiiiite, Red John is Partridge