Oh, my goodness ...
I discovered this yarn over hole in my sweater after I'd finished binding off the bottom hem. I'd seen it a couple of times when I was trying on the sweater, but I thought it was just where I'd started a new skein of yarn and the ends weren't secured yet.
Really?! It looks like I jacked up my knit stitch and yarn over'd at the same time. See the stitch to the right of the yarn over? It's twisted. Boo hoo!
When I first started knitting, I would accidentally introduce yarn overs all the time. It's such a strange mistake to have made ... (?)
When you knit into a yarn over, it's an increase. I accidentally increased a stitch on the front of my sweater. I'd feel a little better about the whole thing if it was on the back ... oh, well.
I undid the bind off until I got to this spot. Then I "laddered" down to the yarn over and twisted it to close up the hole. I also "laddered" down to the twisted knit stitch and fixed it. It looks a little better.