He only went back for his own marketing reasons, he used to be called the little dirty one, which he promoted intensionally so as to bring notice to himself
now his fan base has matured so now he's the clean and righteous one, a new marketing ploy.
I'm guessing that his mother heard some his early music which was really filthy even in today standards and decided he needed god to clean himself up.
He still creeps me out now just as he did back then......but thats the rock and roll business I guess
The little dirt one has just placed a white sheet over himself, something that I can see through as well as others, talented or not.