I wasn’t aware of this controversy previously, and I haven’t gone back to the original Hebrew sources. But if the linked-to piece is correct, it looks like Pappe took a bogus English translation of a Ben-Gurion quote that had been repeated by others, then “paraphrased” some other material that he nevertheless put into quotation marks, and combined them into a quotation falsely suggesting that Ben-Gurion had a longstanding to expel the Arabs of Palestine.
http://volokh.com/2012/03/02/did-historian-ilan-pappe-fabricate-a-quote-by-david-ben-gurion/