With the benefit of hindsight, all he needed was a cortisone shot and it's off to the races. No need for a shutdown. Can't see how you think you're right on this one.
Then why did he wait so long to get the shot? The fact that he wasn't willing/able to get the shot and couldn't hit proves my point. He should not have been hitting third for the 40 games prior when his shoulder prevented him from hitting anything