Mind you, if this is acceptible to AstralWar, I wouldn't consider it exclusive proof of his powers. After all, as someone pointed out, it is possible that it might occur just because of a random gust of wind. I'll need to think of three things (the pope's hat and two more), which if all three occur will be a demonstration of AstralWar's power. Remember: once is an accident, twice is a coincidence, but three times is a conspiracy.
Mind you, I still haven't got a real answer about exactly what it is that AstralWar can actually do, so I can't be sure that I'm not asking a piano player to play a violin.