When you get to the place where you would knit the extra yarn over, you could try just dropping it off your needle. This can make the stitches around it seem sloppy and loose, but this can possibly be fixed by waiting until you've knit a few rows past, and using a crochet hook to gently tug the stitches around the dropped yo into place. It kind of depends on the yarn and your gauge.
Or as blueygh2 suggests-make an extra decrease--I'd just try knitting it together with the preceding or following stitch, depending on what looks better.
If at first you don't succeed....rip it and try again!