It is simply not possible to prove God's existence with science, as the two are basically opposite forces.
That's a pretty weak cop-out. Both theology and science are modes of thinking that rationalize some facet of existence. To say that they can't possibly coalesce is shere ignorance. If you can make a valid point against mine, feel free to state it. Don't just blindly object to the idea.
This merely establishes a question which must be answered, and though very inetersting, in no way suggests anything in particular regarding what actually acted upon the point-particle.
Unless your definition of god is very vague or general.
My point was that whatever responsible force acts above the rules of time and space. Finding the nature of god is an endeavor I will take up, but not here. As far as this discussion is concerned, my conclusion of god is indeed very general.
Why does the force that transcends time and gives the universe a little nudge to get started have to be God? Why can't it be some other transcendent being, or more probably, an undetected kind of particle that whizzes around in multiple dimensions?
Some other transcendent being? Like what, an angel? It really sounds like you're pulling shit out of your ass. A particle can't whiz around in multiple dimensions when all the dimensions are contracted down to the Planck length. It'd be more viable to suggest that there was a particle interaction in a parallel universe, but I already explained that the presence of quantum gravity would nullify any effects it could have.