WIY: Aren’t you referring to the godol HaRav Shimon Schwab zt”l, (of KAJ)? He said “Sometimes the Modern Orthodox halachic foolishness which is flirting with the anti-Torah establishment, may border on heresy. This is all part and parcel of the spiritual confusion of the dark ages in which we happen to live”. This is published in the Mitteilungen, Bulletin of Khal Adas Yeshurun April/May 1989.
Yet lest anyone say the gedolim are against anyone, Rav Schwab continued:
“And now we address ourselves to our chaveirim bedeah, our achim bemitzvos of the Orthodox Rabbinate of America. Ad masai? How long do you want to remain a branch, without becoming part of the tree? . . . We say to our achim b’mitzvos, “have Rachmonus with yourselves, and lemaan Hashem, part company with those who have given obscene semichah to to’evah clergymen” . . . Have rachmonus with yourselves, and break off your professional relationship with those who, for instance, consider Yishu HaNotzri merely a failed moshiach . . .We implore you . . . to part company with those gravediggers of Torah. I know it is a painful subject but it is unavoidable . . . We call on you to join us, the true Modern Orthodoxy [Rav Schwab is referring to previous statements of his that MO is today outdated and “anything but modern”], which is a generation of sincere mevakshei Hashem”.