I think he is over 500 lb still. I really doubt he can consume enough to maintain that weight after surgery no matter how creative his grease-addled mind is. If he survives the operation and recovery, I think he might drop a hundred or two pounds, but he will hit a weight floor due to cheating for sure. To be honest, he has lacked so much will power to lose even a little weight to get the surgery, that i wouldn't be surprised if he overeats and chokes to death.