Insane is an opinion. He's not doing anything more than pouring his gut out. We've all done it. It's called guilt.
I'm not speaking of "insane" in a diagnosis sense, or legal sense or any of the rest. You notice I put quote marks around it.
It's just what strikes us who are more normal when we hear something so over the top like that was, and the subject is the brutal, sadistic murder of a child.
{{{I'm agreeing with you, about the "consciousness of guilt"}}} factor!!!
I was responding to a post which doubted the possibility he's the murderer, based in part on his sounding so "insane" (to quote from the post) in the phone call.
Well, DUH, I would expect him to sound weird and scary to us, who aren't even remotely in his shoes.