Did it look like a forced move, or did it look like someone had loosened some bolts in order to turn it? If it's the former, do you have big birds around there like buzzards, eagles, etc? If yes, maybe one of them was flying low in an easterly direction..then BaM!!...Uhhh there's a dish there. This then knocks the dish southeast a bit. If it was a low flying big bird, perhaps it ran into the outer edge of the dish, thus not really causing any noticeable damage to the dish, but still enough force to cause the dish to turn easterly on the pole. In some of the other posts, some suggested putting up signs. If it were a huge bird that did this, signs probably wouldn't help. For one, birds can't read. And even if they could, obviously some of them can't see, the fact they run into satellite dishes while flying low. OTOH, if it was the latter, then totally disregard the first theory. lol. BTW, if anyone wonders where I come up with some of the theories...doesn't anyone watch cartoons anymore?