That's one interpretation....I explained it 3 years ago on FR.
Now, how do we get Michael to confess?
Certainly not by giving him a new alibi!
The chances of opening a criminal investigation of Schiavo are remote. The chances of getting him to confess probably are little better. But one never knows what a guilty soul will do.
The main hope that I see to do so is to keep pressure on him, keep discussing -- and if possible, expanding -- the strong case against him. That case is primarily based on medical evidence, and it grew stronger when the "bulimia" myth went out the window in the coroner's report. Thus we have to keep asking the question, how DID she end up on the floor, nearly dead?
It is conceivable that one or more of his co-conspirators (Jodi, Brian and Joan Schiavo) might break their silence and accuse him. They are going to Hell for Michael -- unless they themselves come clean.