Yes, that was painful to listen to. Hadn't listened to him in a long time and my first thought was he had a stroke. Looked it up and it turns out it is a different condition; Mitochondrial Dysfunction, which I'd never heard of. It causes fatigue, muscle weakness and neurological problems. It's really too bad for him, but for fans' sake, he should retire. Or perhaps they could have him do spots on their intermission show.