If you haven't tried yet, I would recommend using the moving platform near the arcade cabinet to throw yourself up into the air. Also agree that it's a really difficult emote, the new update helped me just barely reach the emote before the grid hit me.
In what way would that work if it phases through you anyway? I've tried that at least twice and it only goes through me, standing or jumping. *update, okay so now I don't phase right through it anymore but I have to stand on the right spot. Still to get away from the grid is irritating considering I can't find as many shortcuts as floor is lava, which is the only minigame I could complete but there's nothing up top sadly.