Hey, numbskull, did you not see the post directly below yours that asked this very question?

MattM had numerous health problems including severe alcoholism. He had shoulder operation surgery for the fourth time shortly before he died. It's all detailed (as much as I could find) here:

http://members5.boardhost.com/thisisyesterday/msg/1490391288.html

As for McMurphy, I have no idea who this person is. It would be helpful if "M" whatever linked to the original source but that would require writing a message in a structured and coherent style, a skill which she clearly doesn't possess.