I like the fact that BH has kept everyone guessing from week to week, continually throwing things out that cause everyone to re-evaluate their take on who RJ is. Like a lot of people, I thought for quite some time that Brett Partridge was RJ. Him showing up on the list that BH confirmed in multiple interviews was legit cemented this. Then he goes and get's offed (presumably) by RJ in episode 1 throwing that out of whack. Since then, and in numerous ways, BH has said over and over again that the list is legit, Brett Partridge is definitely dead, and there was a reason why BP was killed when he was.
So, Brett Partridge is not just merely dead, he's really most sincerely dead. BUT, in the face of BH continuing to confirm that BP is dead, could he really be saying that the persona of BP is dead, ie, the RJ alias Brett Partrdge is dead? Thus he is off the hook to confirm the list is legit, throw everyone off by saying that the character many people thought was RJ is dead, and be able to come back and say that we'll be disappointed in the reveal. A part of me thinks that BP as RJ would be a little cheesy, but at the same time I would be like, "YES! Nailed it!!"
I don't recall BH ever expanding on his statement that BP is dead, so BP as a persona that RJ "killed off" is completely in the realm of possibility.
