Summary: In what follows, I argue that the Rambam's 8th ikkar unnecessarily and unfortunately became a litmus test of Orthodox Judaism and that the time has come to abandon this idea and let the chips fall where they may. While I believe the Torah developed historically, I also believe in God and in an initial revelation on Har Sinai. Therefore, I don't think abandoning the 8th -- an idea that itself developed contingently and was not accepted by many great Rabbis - can harm anything legitimately and authentically necessary to our religion.
A Satamr synagogue in Kiryas Joel has forbidden the use of Hebrew on its grounds.
I guess this means they won't be learning mishnayos, reciting prayers, or studying SHUT. Hell, even Vayoel Moshe is written in Hebrew -- or do the gabbaim intend to start policing dialects?