Do I need new tires? I know I need an alignment…

I have uneven tire wear on sporadic spots of the outside edge of my tire, which I assume is from a bad alignment. These tires only have 15k on them… the rest of the tread is good. This issue is only on the front tires.

Will the spots continue to wear (evenly with the rest of the tire) if I fix whatever is causing the extra wear and rotate the tires? Or will the rest of the tire wear before the spots do?