Yes, and even if aliens visited today, (they won't haha) it still would not disprove God. It would only disprove a lot of notions people have had about God in their religious orientations. And I've already, like yourself, stated that I too have problems with organized religion in many cases.
I really don't feel I'm just attributing some other name to God as you imply. I do admit that I'm not writing as clearly as I perhaps could; it's a difficult subject.
To me, our modern understanding of astrophysics proves God. Feel free to call it a quirk, but know that Einstein himself believed in God. "God does not play dice!" I guess I should feel privileged to have your online company. After all, you're someone that claims to know more than Einstein about this ultimate question. You also know more than these folks apparently: