If you come to a yarnover that shouldn’t be there, just drop it off the needle.

Really.

It’s hard to believe, but the excess yarn will, as you work the next several rows, mysteriously move itself into the surrounding stitches all on its own.

And if it doesn’t do so quite enough, you can snug the yarn up by pulling the excess length into four or five stitches, one leg at a time, on each side of the accidental yarnover.