I have absolutely no idea how to do this, but tell me if it will theoretically work: Somehow 'slice' the membrane around you into a little membrane bubble you float on, then move it around in Bulk space until you get to where you want to go, then rejoin it with the membrane to get back into this universe. Can you slice a membrane? Is it possible to move FTL in Bulk space? Can you rejoin your bubble brane into our own universe? If that works, it would be a great method of FTL travel and interuniversal travel.