"""I indicated to him that I thought somebody
was probably having a little joke at his expense, and promised him an
email reply. Here is my reply in its entirety:
...
UPDATE: For those of you who missed the subtlety (which was a surprising lot of you) I was quite polite to this guy on the phone. """
It seems to me that in the phone conversation, ESR made it pretty clear that he was not seriously considering it, and that he was going to reply in a strange manner.
I think he has a weird sense of humor, for sure, but I don't think he was particularly bullying that particular recruiter -- he was putting on a show of bullying Microsoft, because that was both his thing (as an early Open Source proponent) and fashionable at the time.