While this looks cool, there's no way it would work without getting sauce all over your hands or constantly awkwardly readjusting it every 2 seconds.
~Not-So-Handy Cynical Andy
Except use a knife.
If I had the choice to make one public service announcement, it would be warning people against microwaving leftover pizza. "Crispy Crust or Bust!" I'm still working on the slogan.