I believe that there are many Reform Jews who are not progressives, and possibly even some temples that at least don't think about leftism all the time. Also, the Republican Jewish Coalition probably contains plenty of Reform Jews. Still, the national leadership of Reform Judaism, which Yoffie heads up, is consciously and deliberately part of the Left. And the guiding principles of Judaism, which can be read at the official site, contain elements of socialism, although the religious principles are more prevalent. My opinion is that most Reform Jews are nice and conscientious people, but they do tend to be "liberals," if not hard socialists like Yoffie seems to be. That may be changing, though. Yoffie is a boomer, the new generations may have different outlooks. I hope.
The big contradiction in Reform Judaism is that it is supposed to have been founded on the principle of personal autonomy and choice, yet today it pursues socialism, which has nothing to do with personal autonomy, but everything to do with the suppression of it in the name of the common good.
That sums it up pretty well, yep.