*WARNING: Ultra-super-wargod-nerding below*
Just to satisfy your curiosity, the mystery I referenced regards FFVII (of course). The ghost in the church is not just cancelled by approaching the ghost; but by talking to a random NPC somewhere in the game world. And soon I may learn which NPC(s) it is. Why would I want to know this? Because I want the ghost to be there when you're at disc 3.
You guys wouldn't believe how much is happening in the FFVII community right now, aside from ACC. People, including me, just learned of a new glitch which affects the perfect game run.