Completely out of the box/jank thinking but what if you use an opener with him?I don't know how much longer they can go with Ryu. IF he has another rough outing next time, do you do something?
Get someone, like maybe Merryweather that can throw gas for the first couple inning then bring Ryu in for hopefully 3 innings? Try and screw with the hitter's timing? Still 2 years left on that deal so theyre going to have to figure something out.
I'd say give him one more start without the bruised hammy and then go from there.