I'll have to start w/ that I'd have to fix it because it would bother me. More important is for you to decide how you feel.
If you take it out to turn it over, lay it out, put the piece the "right" way and step back and look at it to make sure you're getting the look that you are wanting before sewing it back in.
Secondly - THANK YOU THANK YOU THANK YOU for the inspiration for me to use in the back of a quilt that I am finishing. The quilt top wound up longer than I had originally thought, and i don't have enough backing. This gives me an idea of something to do instead of just adding strips in the middle... Thanks again!!