Batman Arkham City Wall Glitch

Ran into my first glitch in the game while working on a Riddler trophy. After grappling onto the ledge and using my grapple boost to launch myself (you must have already received the grapple boost to do this), I was thrown into the wall while I simultaneously hit the jump button to pull myself up, I ended up pulling myself up into the building instead and fell down below the I glided forever like a boss! Hint: you can achieve all of your gliding trophies as well as your “dive for 50 meters“ trophy by doing this under the map. You seriously fly forever... (not that it isn’t easy to do in the first place).