He doesn't deserve a ban but a fine at least, they can't let others get a way with it and then come up with a ban just like that. Can you please try running fast and trying to stop straight away? you can't so you can't say the second was intentional. If you are focusing on a football and not anything else and turn around you might stand on something or someone, that's life, if he stamps on him intentional he would have stopped or pushed his foot into the ground... which you'd have to look at to ensure you don't break your leg. You can also try running and jump and try and focus your feet to not touch something a leg or pillow and see if you land there or break something... which would you prefer Costa to do?