Pulled out stitches while weaving in- Help?

I was using a crochet hook to weave in the ends on my knitted sweater front, when it looked like I had made a mistake that left some of the end showing on the right side. i tried pulling it out but ended up going too far and pulled out part of the knitting and left a hole. Is there any way to fix it, or am I going to have to undo almost the entire piece?

Edit: Okay, never mind, I just carefully pulled the yarn back into place. Sorry for posting.