Who knows when that window was really broken though. It's at least enough for reasonable doubt, regardless of whether JR brought it up or not, it shows that there was indeed a way into the house that night. Moving the body is a huge risk, you only do so if you absolutely have to (eg. If JBR was killed in their master bedroom for example). As long as it's somewhere in the house where the possibility exists that someone could enter and hide, you don't really have to move it. If the killer(s) can get JBR secretly into the trunk, why even write the RN? Simply for an excuse to drive out of the driveway? Surely the could have found another way to leave the house without drafting up a massively incriminating piece of evidence. How would the killer know how the person receiving the note would react? They wouldn't. Who's supposed to be making the telephone call to give JR the instructions for the drop? An accomplice would have to be involved. JR can't just up and say "I'm going to make the delivery now" without further instructions. How would he know where to go? There are a lot of issues with constructing this elaborate ruse just to be able to leave his house.