Anything is possible and I hope that's the case. He was always a pig and boom he stopped. My wife and I are both retired and pay close attention to the tank because we enjoy it so much. With him not eating we're like helicopter parents. Never know what happens behind the decorations or when the lights go off.
Right now I'm hoping he's just chillin while he heals from something I can't see.
Whats interesting is about 4 weeks ago my better half was moving things around and cleaning the inside glass of the tank, she adjusted some of the crushed coral on the bottom and accidentally it buried him, she ran her hand thru the bed and he slapped her index finger and got her twice. Her finger swelled up and hurt like the devil. She went in to her Dr. the next day and they gave her anti-biotics and a couple basic pain pills. Her finger is still puffy and sore but much better. Wonder if he suffered an interal injury during that episode, we watched him closely and all was good untill about 10 days ago.
Her Dr. won't give him an X-ray, I asked.