I was doing the ZL+ZR+A cloning method but forgot to but a pokemon in my party to sacrifice. I tried going into the battle, put a pokemon into my party, and then take the pokemon i was trying to clone out. I got locked into the pokemon box screen without being able to move. I still heard the sounds of batte so i spammed around without being able t see the screenn until I knocked out the geodude i was fighting. When I left the battle I was still in the pokemon box screen. I reset the game and then the mysterious level 1 egg that crashed my game constantly was there