Since I'm the person that built their site for them I can answer a few questions. Yes the technical info is online (and has been for many, many months). I built it so they can add more any time they want. I'm about ready to add a snapshot feature so they can easily show some of their student works.
Before Barry's untimely death, Bud (PF's owner) and him were trying to workout a new marketing arrangement. With Barry's death this wasn't able to happen. Since the ownership of the formula is in doubt, Bud thought it best to take it off the site.