1) If objective moral values exist, then God exists.
2) Stating "there are no objective moral values" is itself a moral judgement.
3) It is self-refuting to state that objective moral values don't exist.
4) Therefore, objective moral values do exist.
5) Therefore God exists.
I've never seen the argument constructed like this, but I think it strengthens the argument to add the obvious self-refuting aspect of stating there are no moral values. This claim is impossible because it in and of itself is a moral claim, therefore there is at least that objective moral. But since there is that objective moral, the statement defeats itself. Therefore, following premise one, the conclusion follows that God exists.