Oh sorry, I didn't know he said this on the air!
I was just shocked to see it in print.
Was it on his show?
Yep. Watch the video at this link. The first part is about LGF and the doctored photos, then a piece with Kurtz (I think) and Anderson Coopers' part is at the end.
http://hotair.com/archives/2006/08/09/video-charles-johnson-howard-kurtz-anderson-cooper-on-reutersgate/