Despite that weakness I think Ronnie is still a strong enough competitor to still possibly win or at least be runner up. Dorian won with a few injuries. I still think Ronnie's back when it is in condition still beats Jay's and the only guy who can really hit a back shot with him is Victor. Truth be told I think Victor beat Jay and Ronnie last year in the PJ. Don't count Ronnie out, he's still very dangerous if he is in shape.
Yate's did have an injury to his Bicep, but it wasn't a major muscle group and only really hurt him in the Front double bi. In his rear double bi, he never really had peaks so nothing noticable changed. Ronnie's left lat and left arm are noticably smaller. That will hurt him in tons of poses FDB, FLS, RDB, RLS, etc....
Cutler on the other hand has balance issues as well and does a decent job of hiding them while posing. It's not the pictures posted that everyone should be concerned with, all pros have bad shots of them. It's whats displayed infront of the judges when they lock the poses in. The transitions and all that stuff only really count in the posing round, not the prejudging.
As the reigning Mr. O it is his show to win. That being said, Ronnie is probably one of the only guys who can get into top notch shape. So if the top guys are slipping just a little, his shredded glutes and Xmas tree could win it for him.