Going with the different script didn't stop it from being unrated. I just watched that last night, from what I got in order to get the funding to make it the way it was in the original script he would have had to tone it down so it wouldn't get an unrated because the studio didn't want to put up that much money for an unrated movie, or keep it unrated but get a smaller budget. George chose to take the deal for less money and a condensed version of the script because he knew that it had to be unrated to get things across the way he wanted.
I also loved the part about the swearing, when they talk about getting the call about there being to much when they're already in production, LoL. Read the script first next time boys, heh.
Hopefully if this remake is successful enough A. George will be able to make the next installment, and B. maybe make a remake of Day with the original script.