Dr. Hall:
I think he means “krum” as not compatable into his own Hashkafa, just like that of Rav Yoshe Ber, Rav Elyashiv, The Satmer Rov, etc. all have Shittos that are not compatable with other Gedolim’s Hashkafos.
He would probably say the same for Rav Miller & the Satmer Rov, let alone Rav Yoshe Ber, Rav Yaakov & Rav Shlomo Zalman Aurbach.