@Sechel – I have heard this from lubavichers that there exists such a minyan in Indineapolis, among other places. It seems to be more common by russian baalei tshuvas and certain sefardim than mainstream chabad though.
And I know and have mishpacha in chabad.
Don’t forget the infamous Haaretz article with Sokolovsky (author of the defunct RebbeGod blog rl”tz) and the Tzfat yeshiva. And the beis mashiach article.
It’s not sinas chinam when there are elements of kefira in chabad – at least until there exists a kol koreh denouncing the movement.