Seeing as this thread's been revived, I'll post about something fairly cool I managed to do with this glitch; in the Yellow Head Bldg, its possible to completely skip both the Baihu fight as well as the fight with all the black suits on the 40th floor! Basically, if you use Mestre's method to turn invisible once you're in the basement with Baihu's arena, you can go past the loading point that loads the cutscene that leads to the fight, and instead walk over to the elevator that Ryo and Joy use to get to 40F. You can use it, and you can sit and wait for it to go up from B5F all the way up to 40F. It takes a while
Once up on 40F, you can enter through the door, but the cutscene and fight with the black suits isn't triggered. If you go through the door to the roof, it resumes as normal and triggers the QTE up the stairs. I tried using the glitch to bypass the loading point for it, to see if I could explore the roof in Free Quest mode, but had no success
