He was delayed in NYC for two days. No charger? Phone goes dead placed in briefcase. If he made it into the house wouldn't one of the first thing he do is place the phone on a charger? He was “addicted” to communicating with friends on it.
Therefore, I don't think he had that opportunity. If hit on head by kitchen sink, he'd bleed. Where all the boards taken out because of blood splatter?
Somebody waiting for him in the house?
This is a very good video, it’s got the “bomb” burn marks in the Marini house, and the Wheeler kitchen floor and boot marks.
http://abclocal.go.com/wpvi/story?section=news/crime&id=7883768