well, i guess saying "established" was a poor choice of words!? i figured that you'd already stated our universe sprang from this singularity...
and the physics, special physics and relativity to which you refer, only apply in this universe because we know no other experience, and can't say whether it would apply inside a singularity, a different universe, or especially outside of this universe (external to the singularity, which is where you claim "god" was).
if we look at your wiki quote, (which i agree, is not the best, but let's work with it)...
we see that the more dense things get, the more general relativity breaks down, and we are forced to use quantum mechanics. now, if we extrapolate from there, and take into account that a singularity contains *all* of the known and unknown material in this universe, contained within a mathematically one-dimensional point (which is for all practical purposes infinitely more dense than the densest black hole) i don't see how anyone can state that even quantum physics could still be applicable. i don't see any possible logical way to positively say that's true.
am i making a bit more sense? i can try to explain further, but i'm not sure how much better i'll be able to do so.