I couldn't agree more with L_Lawliet's post but I feel obligated to point out one serious thing: Heller hadn't decided who RJ would be untill season 5!
Yeah that's right.So by the time we learned that, instantly we should exclude whatever clue he gave before season 5.Think about it.The first 4 season he gave random clues that lead nowhere.This show is over and done.I can't believe it but that's it.
And think about this:Even if Heller decides to redeem his self at the next episodes that are left untill the season ends, how could he EVER do it in a way to fill ALL the plot holes that he created? It's impossible.Or even if he tries he will fail harder than the 8th episode of the season.

Cheers.