Part of me is hesitant to even call him a paradox... I personally think he's a regular super black pastel het pied with an extreme ringer. And I say het pied because, as others have mentioned, most pieds with any 8ball gene tend to be very very high white. It would be astronomically rare (and maybe even impossible) to produce such an extremely low white super black pastel pied. If one copy of the black pastel gene is enough to make most black pastel pieds cappy, I'd assume two doses of it would reinforce that tendency.
The reason why I don't think its a paradox is because, at least in my experience trolling around YouTube, lurking on forums, and going to shows, I've seen quite a few super black pastels/8balls/super cinnemons (and combos) with this kind of weird discolored patching on their bodies. Just go on WOBP and browse through super cinnamon and its combos, and you'll see what I'm talking about. I think it has something to do with the animal's cells struggling to produce uniform pigment when working with two copies of the black pastel/cinnemon gene instead of one, especially if a color/pigment influencing gene like pied or pastel is involved. But that is speculation, I'm no geneticist and I've never produced super cinnis or super black pastels myself.