Just a couple things...
I agree that the BEA Can ban whatever it likes, Its not a constitutional issue. This is a private owned venture, not a goverment owned place.
Nadine is great, and her site is a budget value, If you like her, spend the cash for a month. (ten bucks)
ChristinaModel is going to be the next one knocking on the door. Her webmaster/owners keep watching for Yahoo,MSN,Smartgroups that have her pictures and have them removed on a regular basis. I would suggest moderation in posting any of her materials. Most of the ones I see are her free pics, So just post a link to her site and the pic.
As or the Parady issue, To me a Parady is Humorous in some form. A Sexy Morph isnt nessarily funny, so it might just be considered an alteration, not a parady.
A picture could be posted of Nadine and morphed if it was a tutorial on morphing probably, both morphed and unmorphed and not be a copyright infringment, but its still within the BEAs right to prohibit those images..
just my random thoughts, I stand with the BEA on the Issue