Why did you put "Lutheran" in scare quotes? Just wondering. Is it because you don't think it really is Lutheran, or it isn't *only* Lutheran, or something?
To my knowledge, Moo isn't Lutheran, so it's somewhat misleading to say he's defending the Lutheran view of justification. I don't know if his position would pass muster as the classical Lutheran view:http://blogs.thegospelcoalition.org/justintaylor/2013/12/18/an-interview-with-doug-moo-on-his-new-galatians-commentary/