Well, there is probably some truth in that (I won't proclaim to know), but IMO, LE DID want the information out there. It was a tactical move on their part, imo. What in those interviews did they need to prove the economic charges? Perhaps the child neglect might be touched on a bit, but they wouldn't need everything released to prove that charge, either.
Imo, it was a tactical move on LE's part to release exactly what they wanted out there. Since it is the discovery phase, it can and will be used when the state brings forth a murder charge.