What's disappointing for me here is how entirely vapid the argument from the proponent(s) for objective morality turn out to be. In fact it's worse - just assertion, appeals to consequence, wishful thinking, bluff and bluster. I'd be interested to have a conversation with someone who thought it to be a credible position and who could muster an argument to support him, but - as so often here - we're straight back to "not even wrong" territory.
As I understand it William Lane Craig is the poster boy for those who propose objective morality, but his effort on this matter is desperately poor too. If that's the best that's on the table, then so be it - we can point and pass by without troubling with it any further. If though there is someone out there who could either mount or at least point to an argument worthy of the name then we'd have something to talk about.
I'm not holding out much hope for it mind you, but hey - you never know...