Slamming isn't a sin.

"My team knows it. From overtime to overtime, we pass along the lore about the distortions in the court borne by the Mega Jamvolution mechanism. And about the existence of another court, which we have long observed to be just like this one and yet not the same... That's right. A B-ball court that's almost exactly like this one we slam in. Filled with Pokéslams and people like us. A WORLD where maybe the jamvolution of Pokéslams took a slightly different path, where Mega Jamvolution is unknown... A court where that game 3,000 years ago...never happened. A world where the ultimate rebound was never even built. And in that game of that court... What would happen if one day, out of the blue, a Slamoroid appeared? What would happen to the players of that court, without the Jamnology to destroy the Slamoroid or the power to dribble it away? ... Looks like it's beyond the power of your imagination." -Slammia