Foul play, suicide, or luck?

Convicted money grubbing asshole Kenneth Lay has died from a massive "heart attack," conveniently before being sentenced for all his crimes.

I am wondering if he did it himself so he wouldn't have to take man juice up his bunghole, or if maybe someone didn't want him "talking" and planned it, or if just by fate he kicked it without having to bear responsibility for his actions.

Either way it's a pretty fucking twisted end to the story of Enron.