The mysterious disappearance(?) of ''Sanford and Son's'' Uncle Woody?

Looking for anyone who might be able to corroborate this:

I saw a posting on another board, just a passing comment, that actor Raymond Allen, who played “Uncle Woody,” Aunt Esther’s boozing husband, basically just disappeared from his home in Los Angeles in 1980. Foul play was suspected, but the case was never solved.

That’s the extent of the post. Anyone???

From Wikipedia . . .