After getting the Blimp Ticket from Don Pianta and exiting his office, you can superslide left from the outside of his office door and walk behind the casino to get to the blimp/train loading zone without having to go through Westside Goods.There are currently two time-saving uses of this glitch: This allows you to walk around the seam of the building and potentially open up new shortcuts. Meanwhile, the game loads the graphics of the room it thinks you entered while unloading those of the area it thinks you just left (and sometimes floors and objects too).
Since hitboxes are ignored while in this state, you can slide into the seams of the wall surrounding the door. By pressing X on different frames, Mario and Flurrie will quickly slide around in different directions outside the room. By pressing X to activate Flurrie's ability 4 frames before opening a door with A, Mario will stay outside the door holding Flurrie. This glitch works by allowing you to control the normal mechanism that moves Mario through a door using Flurrie's ability. This is because the game is programmed so that neither Bowser nor Peach can enter a pipe. It should also be noted that even with being able to jump, Bowser still cannot enter the blue pipe. However, if you go down a stair, you will lose the paper mode properties again. Also, you can gain the paper mode properties back by going on the third or fourth stair of the Sanctum. Bowser will appear to be in paper mode, but will function as if he isn't in paper mode. If you try to jump while in paper mode as Bowser, you will lose the paper mode properties, and will have similar properties to Bobbery Glitch. This will also occur repeatedly each time you respawn, although it is possible to land back on solid ground in some way. If you try to walk onto the grass, you will clip through it and fall underneath the level.
If you try to walk up the stairs to the Sanctum, you will simply clip into the first two before hitting a wall by the third stair. If you enter and leave tube mode, another glitch will occur with Bowser's collision with the ground of the area. Trying to jump in tube mode results in a softlock, because you are unable to go back to normal. Since these value are locked, this also allows you to float in the air. If you try to jump while in tube mode, the game will lock your Y Speed, your Base Speed, your current angle, and your direction although you can still move around freely.
Since you are in paper mode, you can also go into tube mode. Performing the Bobbery Glitch on the door right before Magnus von Grapple 2.0 will cause Bowser to be in paper mode during the intermission.