Sometimes they don't like to eat when in shed. I would just try again once the he is finished with shed. As far as being defensive when you spray him. I wouldn't spray him. If you need to mist, mist the substrate a bit or add another container of water to bump humidity. They are already really uncomfortable when in shed and getting sprayed doesn't help. Spraying his isn't going to hurt him, but no need to antagonize him if he doesn't like it when there are other ways to increase humidity.