I think the zero-sack performance was more about the game plan than the O line. Bailey was getting owned by Hardy right from the snap, but Wilson was releasing the ball faster than I've ever seen.
Okung is still on the pre-CBA rookie wage so he's making way more than he should, if they want to keep him it could end up being for the same amount he's making now. Personally I think they should let him go though, he keeps regressing and is always hurt.