I also like Paul Wells' take - hat tip to him as his blog was the first place I noticed this story.
With 15 days to go before the press gallery can't tear any more strips off him, Tony Blair takes a great big strip off the gallery. The word "harlot" makes an appearance.
UPDATE: You'll be shocked to know the speech didn't go over well. The tale of the tape:
BLAIR: I'm not complaining.
TELEGRAPH: We're not defensive.
INDEPENDENT: We're not sanctimonious.
GUARDIAN: We're not as bad as the other guys.