Could you be a little bit more specific? Are you claiming it never really existed (it did), or that it was never destroyed (it was), or that it wasn't destroyed in the way the OT depicts? I have a feeling it is the last one, but what evidence, exactly, has been unearthed to discount that story entirely?
I realize that he should be providing evidence of these things, not I, but I'd like to show his statement to be outright false. I have a feeling he made that statement out of ignorance, not because he's so well-read that it would be impossible for him to have missed such evidence if it existed.