I am so envious of your lovely quilting. Just keep going and if it bothers you, go back and fix it. Those are some tiny stitches and you don't want to get frustrated at this point, do you?
I know i am new to the quilting world, but it took me several minutes to notice your oopsie and if you hadn't put that green arrow there i would never have caught it. Great job by the way.
If you pull that tiny thing out I may have to quit the QB. If you need some perspective, let me show you some oopsies I've done on quilts that I left in and gave away!
Shoot, I had to go back and look for the green pointy thing!! That is what I would definitely remove!! Is this quilt going to the Quilt Police Academy? We are our own worst critics.