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Help! The Taliban ate my face!
(archive.ph)
Rules:
Also feel free to check out !leopardsatemyface@lemm.ee (also active).
Icon credit C. Brück on Wikimedia Commons.
I suspect he would like nothing more than this to be as public as possible, so I don't think he will sue. Since my interest in this only really extends as far as "haha, that guy" I'm also not going to actively look into it ;-)
I don't think "standing" exists as such in civil law countries (as most of Europe), that is mostly a common law term.
But AFAIK the only one who can sue for this are the "injured parties", i.e. those about which untrue or defamatory things were said or who's identity was revealed without proper consideration of the pros/cons (because the right to anonymity in this is far from absolute).