1) The planets are not particularly aligned at present.
2) Even if they were, it would have no effect on what you can or cannot do with brooms.
This sort of rumor circulates every few years. Decades ago, it used to be standing an egg on end during the equinox. The planets do not exert any appreciable influence on anything smaller than the whole Earth, and even then it's a small effect.
It's a confirmation bias. It's hard, but not impossible, to stand a broom on end, regardless of what the planets are doing. But if you think it should work, you'll likely make it work, and if you think it shouldn't work, you'll likely fail. Same with standing an egg on end.
Try telling half your friends that the position of the Moon makes it possible to stand an egg on end, and tell the other half that the position of the Moon makes it impossible. (Obviously, don't let them communicate with each other.) I bet you'll find that the ones you told it will work can do it, and the others can't.