If you guys remember Sargon vs Akhila (I think that was it) then it's apparent why the girls themselves cannot copyright. We've already mentioned how cover cannot intervene since the avatars are involve (and there nothing illegal about showing publicly available clips)
The people who'd have to do the strike would be the girls themeselves but then, if the dude decides to fight the complaint, they'd have to settle it in copyright court, and then the gremlin would necessarily get the FULL dox (name, DOB, etc) of the person with the legal dispute against, which he can easily leak to the web.