Did he Kill himself?

Yup. If I recall Chuck first tried slashing his wrists, but doing so didn't kill him and even when healed up the injury prevented him from one of his favorite pastimes, painting. He later hung himself. Chuck was a good man. Like any man, he had his faults but overall he was far above average. I remember hearing of his death and it really saddened me.
He was strong. With or without Dianabol, Chuck was a very powerful man.