Has it been proven that there's no way to do it?
The only way to prove that is to hack into the game and disect every bit of code, but it is a very likely a complete hoax.

Couldn't you like hack the game so you get the scenes I hear about with the ghost of Aeris in her church and stuff? The ghost is supposed to be the little white flickering thing, right? It disappears after a second.
Seems very unlikely.