Joined: Mar. 2005
My understanding of the term "singularity" is that it refers to a place or condition in which our known laws of physics don't work reliably. Taking just relativity by itself, when the density of energy approaches infinity I wouldn't assume that the results (of physics equations) were realistic.
But that aside, at the density implied by stuffing galaxies into the volume of a subatomic particle, quantum effects become as important as the relativistic effects, and the unification of relativity and quantum is still a work in progress (or was the last I heard).
As for what Mr. Bush might believe or not believe, I can only guess.