Until any online person or extension of your person is recognized as either its own being or an extension of someone else being able to call this “rape” is a bit far fetched.
Harassment is probably a better generalization of what happens online. I don’t believe “what happens online should stay online” should be extended to anything beyond fantasy and roleplay. I imagine if I were to utter death threats or sexually harass a coworker I would be just as guilty if I did it outside the internet. I think this is what ID had in mind anyway.
If a game is this real to someone and they are truly hurt by a virtual rape on Second Life I’m sure they would be just as happy accepting a virtual conviction of the virtual assailant. Expecting real world action is nothing more than a self benefiting double standard.