[jlaternman]

It does make sense with a wider context. In short, he was miserable, and he always planned to go out on his own terms when he felt he'd reached the end of the path (I imagine influenced by seeing his father die painfully through disease as a young man). He documented both well. Having his family in the house at the time, and to be on the phone to his wife, was likely to let them know the nature of it, a kind of act of transparency and trust. It makes sense in the context of his beliefs and nature. Also, he would have always been in the middle of something, work wise.