Dumb question? What happened to Martin (Headmaster) Birch?

[Anonymous]

Produced the greatest of IM albums. I seem to remember Him producing either
Black Sabbath's "Heaven and Hell" or "Mob Rules" records. Are My memory banks fawltey,
here?

 

[Tap_Legion]

He was either beat to death by a busload of Nuns.....OR.....he retired from the biz.

 

[Albie]

He was either beat to death by a busload of Nuns...

Lets hope that not too subtle for some.