A much simpler but perhaps more tedious way out of this apparent rational loophole for religions would be accept it. Religion may keep this final straw of rationality: we don't and can't know everything given a (probably) infinite universe. Religion is not best understood as a theory of physics anyway, but rather as a study of history, society and mind.
[0] http://www.preposterousuniverse.com/blog/2009/06/17/timeless...