The Rebbe has himsef stated that he is “Atzmus ein sof mislabesh b’guf gashmi” as was printed in Likutei Sichos vol II, page 500-501. Can be found in any copy printed before 1980. Has been deleted from any copies printed since. Or in the original verbal Yiddish quote, “Dos iz atzmuso alein, vi Er hot zich areingeshtelt in a guf”
The link to the article by R’ Chaim Dov has nothing to do with that website. The article was published in the late lamented Jewish Observer. And yes, I know the esteemed Rosh Yeshiva as well. I have even discussed some of these issues with him personally.