First off only God can see into Mel Gibson's heart-not you to know if he is sincere. Did his statement or apology sound one bit angry? No, actually it was the most self-loathing statements I have ever heard. It isn't up to you to know or to see what is in his heart. Of course you wouldn't want to believe his statements and apology were written by him. That way you can more easily dismiss it.
I dismiss it because of his hateful comments and because of the photos with the young ladies.