So there's a fun debate going on in the blogosphere about which Judaism is the real Torah-true Judaism.
There are those in the Orthodox camp who like to stake out a claim that Orthodoxy is the only "Torah-true" Judaism.
In a recent post my friend and colleague Rabbi Jason Miller points out that all branches of Judaism change and adapt. He cites recent changes in Orthodoxy including women leading Kabbalat Shabbat services at an Orthodox congregation in New York, a number of Orthodox leaders signing a statement calling for a change in attitudes toward gays, etc., as proof that all movements change, albeit at different paces, so no one movement can claim to be more "Torah true" than another.
Rabbi Hyim Shafner presents a somewhat confused response (with a mistaken summary at Jewschool) claiming that what's relevant isn't whether you change halachically, but "Perhaps it is a group’s shmirat hamitzvot, keeping of all the mitzvoth, and passionate commitment to torah study and Torah values that determines its Torah true-ness."
Perhaps R. Shafner never noticed that just as there are a lot of Conservative Jews who don't follow all the mitzvot, there are a lot of people associated with the Orthodox movement who don't observe all the mitzvot. When I was growing up the shul we did NOT attend was Orthodox. You can't really say that a movement is or isn't "Torah-true" based on what a sampling of what the members do or don't do in their private lives.
Personally, I think the rabbis who most loudly proclaim to have the only "Torah-true" Judaism are the ones who are furthest away. The ones making those claims usually try to show how "authentic" and "serious" they are by piling chumrah (stringency) on top of chumrah. As if living in an increasingly narrow and confined world somehow defines one as being serious, as being "true to the Torah."
Yet if you look at the "Torah-true" Jews of old — the rabbis of the Talmudic era — they were really a bunch of radical innovators: very much like the Conservative rabbis of today. Guided by Torah and the basic principles of Jewish law found in the Talmud, they found ways to make radical innovations in halacha. See my post "radical rabbis" for more on the subject.
I'm a believer in pluralism. I don't have the hubris to believe that my way is the only way. As far as I'm concerned, anyone who tries to live his life guided by Torah, who tries to live his life aligned with what he/she believes God wants from him, is living "Torah-true" Judaism, and it's not anyone else's role to judge whether or not someone else's Judaism is "Torah-true" or not. Worry about your own Torah, not someone else's…