Bob Kirkland is not RJ and is RJ.

I believe we will find out the RJ is actually Bob Kirkland's twin brother. In S6Ep4 we learn from Kirkland that his twin brother, after a very traumatic childhood, found someone who inspired and helped him mentally, emotionally, and physically.

I theorize that the twin found Bret Stiles who helped him stabilize and channel his mentality. After being groomed by Stiles the twin leaves Stiles side and becomes RJ. Thus Bob Kirkland is not RJ but is RJ!!!