Seems that the reason Ken Waltzer's piece disappeared from the HNN is because Harris Salomon threatened a lawsuit. HNN simply crumbled. [See this post]
When I inquired the editor even said he was not sure Rosenblat falls under the public figure category [public figures cannot sue for libel in the US when the libel action relates to their public activities. That is why Irving waited to sue in the UK.]
I told him that anyone who goes on Oprah twice, gives speeches all over about his experience, pens a memoir, participates in a movie, appears on Good Morning America would have a very hard time claiming not to be a public figure.
Pretty distressing that the HNN folks backed down just like that.