You could also send him another email now. Fake an email from him, in which he says he wants to be told what an asshole he is, and how bad his writing is. Attach it to your response, in which you oblige.
The only downside, of course, is that you don't want to talk to him anymore, and this might draw further communications.
Another Possible Response
Date: 2009-01-31 03:55 pm (UTC)The only downside, of course, is that you don't want to talk to him anymore, and this might draw further communications.