I suggest there is a word play on "Paul" in the final phrase of James 3:16: παν φαυλον πργμα ("every worthless thing") => παν Παυλον πραγμα ("every Paul-ish thing"). If the name "Paul" appeared within close textual context of James 3:16, a word play would be apparent. Obviously that is not the case, but if James 2:14-26 is reacting against a text or reputed teachings of Paul, then "Paul" would be in the echo chamber of James' performance arena so that readers might well sense a resonance between the two.