I'm not sure you're understanding me, navajoboy. Let me summarize for you as succinctly as I can.
(1) The images were meant in good humor. While you're horribly offended by them (and you just admitted that you found them "disgraceful," so don't even pretend that it's just a use issue; you've now placed a value label on them), I'm willing to bet that the target of the images doesn't really care.
(2) The public use of the images does not preclude you from seeking a diplomatic solution, nor does it justify a public one. You could have simply PMed the people using the avatars or images, or you could have PMed me so I could pass the message along to them. Instead you chose to go public and create a spectacle where none was required. In so doing you have done nothing more than draw more public attention to the "humilating" images you sought to avoid.
(3) A public strategy here engendered a negative response from those who felt it was unjustified whether they were right or wrong. That is not to say that a retaliatory response is correct, but it is not unexpected at the same time.
(4) You don't know as much about copyright law as you pretend. Almost certainly the manipulation of these images constitutes fair use by parody.
-- Todd/Leviathn