I don’t think PF will ever implicate himself by talking. I think, even if convicted, he will be convinced that he can win an appeal and be exonerated. He won’t give up hope until all appeals are exhausted. Perhaps, MAYBE he’d talk then. MAYBE. This is all JMO, of course.
PF reminds me a lot of Scott Peterson ... the arrogance for one thing. People like PF, Scott, Jodi Arias and so many others, act like they are the victim and they did nothing wrong. It never ceases to amaze me.