Healy's claim is, on it's face, totally unbelievable. As others have pointed out - Kerry didn't deny it in addressing the alleged quote repeatedly over the past several days. And when you substitute a blank for the word foreign/more - and read both the setup remarks and then Kerry's response to the setup remarks, nothing makes sense but foreign. And if he used the term more - the context tells you the implied meaning was "more foreign leaders".
Furthermore, even a blind pig today is capable of copying an analog audio file onto a PC, converting it to an MP3 file and sending it along with the e-mail announcing the "correction". It doesn't seem that he has one so.
I'd love to know the Rube Goldberg mechanics of the pressure that was applied to get him to attempt a recantation like this.