100% Rye Pizza Base Recipes?
Have you considered using 100% rye bread as your beginning and going from there, rather than pizza crust?  Peter Reinhart's Bread Baker's Apprentice has a 100% rye sourdough bread that might suit your needs, although it will be a time consuming process.  A preview is online in Google Books.  The recipe is similar to a Neopolitan pizza dough - just basic ingredients with no fat.  Because of this, I'd roll out the pizza very thin, New York style, for a crackling crisp crust.  If you don't want to buy the book, many local libraries carry it in the US, at least.