New Super Mario Bros. wall clip glitch (2-Castle)

When Mario jumps while invincible, his hitbox only occupies a 1x1 tile, but when he shoots a fireball, he goes back to occupying a 1x2 space. Most of the time he is just pushed down if his head hits a ceiling, but due to this ceiling being a platform with an invisible wall above it, the game kinda gets confused, and Mario clips into the invisible wall from below. The game then follows its "Mario is in a wall" routine and Mario slides to the right until he is freed, pushing him through the wall to the right.
Unfortunately, there are no star boxes in this room, so you will need cheats to have a star for this section, but it otherwise requires no gameplay modification.