The question is, where did they get the “unedited” version they posted? Did he really say those words and remove them to leave the public in the dark as to his true intentions?
They say the sicha is in lukutei sichos chelek 29.
A later sicha quoted in the pamphlet clearly shows him referring to the Tzemach Tzedek ZT”L as the “nasi doro”, showing the usage of such a term for Lubavitcher rebbes.