Rob,
That is really something that you are able to maintain a HR in the 150s early in the race.. it does show how strong you are aerobically and is interesting data. I gave up wearing a HR monitor a long time ago but it does give interesting data that can be of value.
And I am very sorry for your friend. I lost a friend at work (who was only in his mid 40s) a couple of years ago and it was such a shock.. and it has always been such a hard thing to fully accept.
Yes.. running is an escape and a coping mechanism for most of us. I sometimes think if our lives were perfect we wouldn't train so hard but who's life is perfect?
Great race and Congratulations!!

Good luck at Berryman! I have done the Marathon but never the 50.