It is fact that the Moon has a stabilizing effect on the Earth. There is no reason why it could not have a DE-stabilizing effect.
In fact, it could be that the Moon is responsible for global warming... er, climate change... er, climate whatever!
Seriously, I think you're correct. On another more ethereal but equally serious note: I was a graveyard shift coffee shop waitress for several years. That's a pretty crazy shift, especially after closing time at the bars. You could correlate crazy behavior with the moon, absolutely.