I have had to suffer through a few nights of this show when my wife has the remote and I was doing work.
Few things are working against him winning it all.
He may have gained in the fat department but he also has a ton of muscle underneath that will hurt him reach the major weight cut numbers.
When it comes down to voting the lowest two off many times they remove the person they feel has the start to do the rest of it at home on their own. I'm guessing Rulon will fit into that catagory if placed up against another candidate other participants also like.
I would hope by now the other contestants have learned to removed the "athletic" guys early if they have a chance to win since its more a game than a weight loss camp. If not it usually means the "atletic" ones keep working hard, dropping decent numbers, and usually make it to the end.
I hope he is able to get himself back to a good weight for his health, but I don't quite see him winning unless the other participants just drop the ball.