hmsong, I'm afraid I don't have any suggestions.
zeteginara, I went and tested that event with both Reborn and Relocalized (the two that rename that boss to "Satan's Wall") and it worked, so there's something breaking that event (as opposed to it being inherently broken).
Can you post your Turbo config file (SoM Turbo.######.ini)? Either here within [
spoiler][
/spoiler] tags, or to a text file host like
pastebin.com. It's basically just a text file, open it with something like Notepad.
What you describe sounds like something is overwriting part of the event and causing it to break but there's nothing on my radar that
should be conflicting, so will need to get more info to get this figured out.
As for a workaround, if you're using an emulator that lets you directly edit memory, change 7ECF32 to 03 and 7ECF34 to 00 to properly skip that event. You could likely use cheat codes of 7ECF3203 and 7ECF3400, turned on briefly, then back off, to change the necessary event flags.