I've made the difficult decision to frog and restart my sock. I knew several rows ago that it was going to be too big. Then the cat got ahold of it and chewed through the yarn in such a way that it will be tough to rejoin without having to unknit a bit, and also in such a way that it will be difficult for the stripe pattern to turn out identical in the second sock.
I think I'm going to start doing lifelines for socks. No more flying without a net for me.