We like our ozone layer high and tight!

I read this article about the hole in the ozone over the South Pole and how it is lessening. The scientists are patting themselves on the back for that one. Since the ban on ozone-depleting products, the hole stopped growing. The estimate is that the hole will be fully repaired by around 2070. So, we fixed it. Yay! Guess what? There is another one forming at the North Pole. It is being caused by yet unexplained weather phenomena. Huh? Do we really know what we're doing when we try to fix nature? The scientists have also found that closing the ozone hole speeds up the melting of the polar ice caps. That sucks for polar bears! Maybe nature was fixing itself when we came along and interfered.
(Yeah, I know polar bears only live at the North Pole.)