> Seems more likely it's giving him another way to be guilty.
That's the whole dispute. Right now there is NO explanation for Terri's injuries and Michael has NO alibi. The baseless notion that there might have been a mystery intruder takes all the heat off. The message is: "somebody else did it."
That is all that the unwashed (including the press) will hear. You could show them Michael's signed, notarized contract for a Mafia hit on Terri. They would find a way to twist it into exoneration for him.
Another HUGE thing you give up with this "mystery intruder" is the story. We have pieced this together from many sources. We know that Michael and Terri had a raging fight that day, and we know why. We know that he has a violent temper and was fully capable of hurting Terri. We know that he has the profile of a jealous husband and controller, exactly the kind of man most prone to domestic violence (and we also know that DV is the most common cause of injury in young women). Michael's cruelties and denial of therapy to Terri later, during the years of her internment, fit the same pattern. And at the end of it, his triumphant boast on her tombstone -- "I kept my promise." You can just hear the rest of it sotto voce -- "I told you I'd kill you, b*tch!" This is a man for whom no kindness to Terri was too small to refuse; a man who held a bitter grudge all those years; the man who DID kill Terri.
That whole story -- you could call it the historical record -- is mooted by the baseless notion of a mystery assailant.
What do we get in return? An alibi, free of charge, for a man who doesn't have one: "Somebody else did it."
If you want to go that way, FIRST find facts to support the theory. Otherwise it's a fairy tale, and imo, a destructive one.
If an intruder story takes the heat off Michael, Felos would have mentioned it.
My guess... the story puts more heat on Michael.