In that case, a JR or Manu 6th man role could be the break he needs to snap out of it...or it could be the nail in the coffin. I think RJ's got the right head on his shoulders to handle it well.
I’m not so sure RJ would handle this well at all. I agree with everything else you said particularly the finger injury (people forget his bone poped out of his skin) but I don’t see RJ handling being on the bench at all.