This is the story I heard from somone that was their at the time.
It was a very sad turn of events, for a good man.
Richard and his wife were at an convention or zone visit when she tripped and fall.
I don't know the details of her injuries but she had complications and died, Richard blamed himself.
He never recovered from her loss, a rotten human tragedy.
If any "good" came out of it, I believe their was a new examination of depression and suicide.