Interesting enough. I don't see the reason for doubting his statement. According to Shaykh Al-Arna'ut (rah) he had written his notes on the text which were removed by the publisher or whosoever. He mentioned that he had written his analysis on the narration of Al-Utbi which were removed. Mahmud Sa'eed asked the son of Shaykh Abdul Qaadir and he denied such distortion from his father side. All this is present in Rafa' Al-Manarah (73-75). Shaykh Abdul Qaadir had written his defense before it was inquired by Mahmud Sa'eed. He used to send it to whosoever inquired it from him. See this: http://saaid.net/Warathah/1/alarnaut.htm#_Toc70769592