IMO, Thornburg is done as a starter. If Blazek and Smith beat out Davies and Cravy (and whomever else, including Thornburg), then Davies and Cravy (which is fun to say) go back to AAA. I don't believe their development will be hurt by it. Heck, pitching in Colorado Springs is as good a test as there is for a pitcher. If the Brewers just say, "Well, Smith and Blazek have been doing well in the bullpen, so there's no way we could take them out of the bullpen," the Brewers are dolts, and they lose the chance at creating extra starting pitching depth more or less out of thin air. Again, I'm not saying that either one is a sure thing as s starting pitcher at this point, but there is next to no harm in trying.