I was being so careful. I measured my quilt top across the middle and both ends to make sure the pieced borders would fit. And then I sewed a top/bottom border to the side of this quilt. I pinned every 4-5 inches because I couldn't figure out why it needed so much "easing" after all of the measuring I did. Well, now I know why.
So I'm making friends with the seam ripper. It will take me a while to remove 68" of border. Maybe tomorrow I'll get these 4 pieced borders on . . . The right way.