It will not be Petraeus’s untimely death, it will be the death of his children, his wife, Paula Broadwell’s children, or husband that may keep Petraeus in check for Obama. This Chicago mafia will stop at nothing to maintain control of the country and therefore its billions of dollars. I do not know if Petraeus can protect them and still tell all.
When dealing with a deadly threat, if one has access to media it is far better to go public than to cower. Think Jennifer Flowers or Paula Jones. Both were so visible that it would have been very hard to knock them off without inducing an investigation looking into every similar case.