ABC also has this article on their site from Jake Tapper.
“Undermining McCain’s Campaign Attack, Republicans Back Obama’s Version of Meeting with Iraqi Leaders”
http://blogs.abcnews.com/politicalpunch/2008/09/undermining-mcc.html
I haven’t been able to find anything verifying this.
They are unnamed sources and no one is confirming it. I’ve looked also. Sound like they either sock-puppeted the quote or got a low level hack somewhere to spout off.