Please keep in mind that I'm speaking as an RE'er. I just do not, personally, accept Big Bang theory.
According to RE theory, there was nothing before the Big Bang, and then there was something after the Big Bang. So, nothing + nothing = explosion, which causes everything that exists. please, for the sake of all that is holy, try to replicate that. Try to take nothing and cause something. For example, empty out of a room of all manufactured and artificial substances. Just leave the room with nothing in it except for bacteria and stuff. Now, leave that room alone for nine months. When you come back, is there a baby inside? Of course not! There was nothing to cause the baby, and there were no forces acting toward the effect of a human child. In the room, there will be exactly what you left there: nothing. Nothing + nothing = nothing. Always. Period.
So, if there was ever a point when nothing existed at all, there would still be nothing. And since there's a universe now, we can logically deduce that there was never nothing. That means that the Big Bang did not create the universe, because it is logically impossible for an explosion to have been caused when there was nothing. Even if the Big Bang happened, it is not a perfect theory for creation.
But, if you want a theory that explains a flat Earth, here goes: God was playing marbles and he stepped on this one by accident. Is it random? Yes. Does it speak for the entire FES? No. Is it valid? I don't know. Now work on proving it wrong and then get back to me.