R’ Weiss-haLivni (who is wholly a traditional figure), in his attempt to make his peace with the data that leads some to DH still included a revelation of the original text of the Torah word-for-word to Moses at Sinai as a historical event. (Although he believes we lost it and our current Torah is reconstructed from remnants; see his Chateu Yisrael theory discussed in his books Peshat and Derash and Revelation Restored). R’ Farber’s view falls significantly to the left of R’ HaLivni’s views (both on this issue and women’s issues; those who are familiar with the actions of R’ HaLivni and his UTJ colleagues know that when R’ HaLivni was rabbi of KOE on the West Side, women were generally not afforded partnership minyan-style opportunities, and his colleagues R’ Pinchas Klein and others believe that homosexuality is immoral- the UTJ even disaffiliated the Montauk Minyan in Brooklyn a decade ago when they invited R’ Steve Greenberg to speak).
I don’t see, honestly, how he differs from others who have engaged in similar analysis. Whether or not the American Orthodox establishment treats him like another R’ Louis Jacobs is something to look towards.