Joseph, R’ Yaakov definitely held that Israel regaining control of the Har HaBayit was a great thing. R’ Reisman shlita told over the story of how R’ Yaakov zt”l made a Shehechiyanu and began saying Hallel when the announcement came over the air that the Har HaBayit had been taken by the IDF. The story was also verified by R’ Dovid Landesman, a mechanech who lives in Israel, and was a student in Torah V’Daas at the time.
