I can't help thinking.....
...that; "Our tactics are not reprehensible unless they're used against someone we like, then they are." has a touch of two-facedness about it.
Likewise deciding who gets to be anonymous, rather than who gets to be "Anonymous", feels like crossing the line between being hacktivists and "teh internet police".
I happen to think they've done the right thing here, but I'm not sure that my opinions are suitable as a substitute for a legal framework and due process.