securing a dropped stitch.

[tokmom]

This is what I get for knitting when there is a lot on my mind!
Anyway, I'm doing socks for one of my kids, so perfection isn't a must.
Somehow I dropped a stitch off of one of the double points while joining the gusset to the top of the foot stitches, so it's on the side. It is about 2 inches down now, and I really don't want to rip it out to pull up that stitch. Currently it's safety pinned. How can I secure it so it won't unravel itself?

For the record, don't ask me how, but I got the right number of stitches again on that one dpn. I really should not knit when my mind is a million miles away.