Technically creationism means god created the universe and that can be the tale of creation in 6 days or god setting in motion the events that lead to the big bang. If a god was proven to exist, it would absolutely be the latter option, and I don't think it is inconsistent for a physicist to believe a supernatural force "created" the big bang, but of course I disagree.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you