Jacob Blumenfeld, one of the three listed editors of the contested volume on anarchism, kindly sent me a copy of the reply sent on behalf of all three editors (including Critchley) to the allegations by Mr. Rousselle noted yesterday. Mr. Rousselle has posted that reply in its entirety along with his response, and I commend the whole thing to readers who have been following this story.
There are a number of unusual things about this incident (e.g., Mr. Blumenfeld et al. say that Mr. Rousselle "spontaneously" acted as a "mediator" for the volume), but it does seem to me the crux of the matter is this: someone who prepares a book proposal, and responds to the press's referees, which then results in a contract is an editor of the resulting book. This is what Mr. Rousselle reports doing, and as far as I can see, no one is denying he did that. Mr. Blumenfenfeld et al. now offer to add Mr. Rousselle to subsequent editions, perhaps acknowledging that point. Mr. Rousselle, in any case, takes issue with several claims in the reply from the listed editors.
UPDATE: It seems I read Mr. Blumenfeld et al.'s letter too generously, i.e., they are not offering to restore Mr. Rousselle as an editor.