If the rape was just a pretense to get Dong Gone in a vulnerable position to eliminate them I'd be willing to sacrifice Josh's cornhole to the corn for the betterment of everyone.
I'm sorry... but Josh's butt is not the door into Kingdom Hearts, Ansem. Kingdom Hearts is light and that's a very dark place to stick your keyblade. Also, Dong Gone's dong is gone so Josh has little to worry about there. So, I guess the answer is I would be very skeptical you succeeded in such a task.
You don't rape Null by mounting him and going to town, you rape his mind. One way you could do this is by hooking up with his mom, feign ignorance on anything KF related, and then when you are introduced to "her son", whisper into the phone the one word: "... gunt ..."