Again just speculating, but this could also elevate the dump of the documents on Twitter by the individual into a press issue now since it is showing wrongdoing.

Rights of journalist to distribute illegally obtained documents in public interest I think was firmly established by SCOTUS in BARTNICKI v. VOPPER [0] and they go over the DMCA implications in the opinion.

[0] http://scholar.google.com/scholar_case?case=2171346211086974...