I think Lloyd was pretty unstable to begin with. He got cast in the biggest movie ever and really didn't understand how to deal with it. When I saw the audition tapes on the bonus content, I thought they purposely chose the worst one. He seemed much less mature than the other kids. Sure he was bullied in school but so what? Most people where at some point. That's part of growing up. Eventually you learn to deal with it and stop thinking the world owes you something. He has been diagnosed with schizophrenia but aren't most actors that way too? Doesn't that help them be believable in a role. The best actors can control their schizophrenia while the ones that can't crash and burn.