Like I said, the people who know aren't talking, and everything else is speculation.

There are a ton of people who are in debt up to their eyeballs who don't go around killing people.

The circumstantial evidence, from what I've read of the original bill of particulars, certainly paints a pretty strong picture, but the motive is the weakest part. The alleged motive is also contradicted by the emails from Joe to Grant.

We simply don't know who did what, who put whom up to what, or anything else. It's all speculation.