Wow! You've done an amazing job, Rodney. Whatever you choose to do to get that one block under control will be the right thing, because you're the one doing the sewing. Do it again on another row and it isn't a mistake, it is a pattern. Symmetry is over-rated. You could just trim it off, and do that to a couple of other blocks: Modern Artistic Dada Homemade. Design feature!