From what I can see, he did publish it (yesterday), and responded to it as well. I don't see an easy way to link to it, so search for "By Tim O’Reilly. March 12th, 2013 at 1:22 pm" or just scroll down.
My impression is Stephen refused to make O'Reilly's comment visible until he had a chance to insert his claims into its content. Seems odd that he'd edit the comment to include his responses when he wasn't doing so for other replies, and it really makes it difficult to follow O'Reilly's take on the events.
Further, one of the 9 comments which follow it, excluding Stephen's, would have made reference to it had it been visible since that time, right?