It's still hard to argue for either side. But the relativists seem to be winning today. It's at least all the vogue nowadays.
But it's important to keep in mind that if we prove relativism we have proven God doesn't exist because nothing is more absolute than the Unmoved Mover. It's a critical part of the theory.
edit: I tried to track it down. But I think the specific quote is just one of those things that's been floating around forums for a long time.
edit2: The Christian God is the solution to Plato's problem of the source of moral and physical absolutes. If we reject that there are absolutes we've also removed the necessity of the Unmoved Mover. If we are relativist and Christian, we're simply lost the roots of our religion. Then it's a house built on mud.