It's a touchy subject but, from a legal standpoint, Shane didn't do anything wrong and the scene was removed. I don't consider this situation on the same level as Weinstein. We have directors, like Tarantino, who constantly worked with that pig, who are still comfortably thriving in the industry (granted I still watch the guy's movies because there is talent and entertainment there but still there is something to be said).
Shane should have let Munn know though so she could decide and, obviously, she would have made the better call. She is not the villain here but neither are her costars who are receiving a lot of negativity even after voicing their support for her. It's all really aggravating and no doubt this movie and probably the series will suffer for it but that may not be the bigger issue here either.