You can't rule out the idea of a creator, no. But when I thought about this recently the idea of a moral creator seems to me to run into trouble because of (a) the massive amount of time between life and the Universe beginning and us; and (b) the fact that there was very clearly so much suffering and pain in that time. Both of these appear to go very strongly against a creator who is both moral and favours us - i.e. how can He be moral when he allows His creation to suffer so, and how could we really be His ultimate aim since he took so long to get to us, and even then waited apparently another few hundred thousand years to make Himself known.
A moral creator just does not fit in, in my opinion, with the Old Universe. Having taken that step, why bother having a creator at all? If there was one it does not matter, and so you may as well not have one at all.