Knitting help please?

[randomling]

Hello! I have lurked here for aaaages but I am now delurking because I need some help.

I'm knitting a seamless sweater (a la Elizabeth Zimmerman) on circular needles. It's been going swimmingly (stocking, so I'm just knitting and knitting). But this evening when I got home from work, I pulled the project out of my bag in a careless manner and accidentally pulled a bunch of stitches off the needles.

[insert giant sadface here]

So I've managed to get the stitches mostly back on the needles, but I think some of them are twisted and some of them have dropped back a few rows. I know you do something with a crochet needle, but I'm not sure what, and I'm not sure what search terms to use to find good tutorials online. (I keep wanting to type "save my knitting!" into Google, but I'm not sure that will help much.)

My two major questions are:

1. How do I fix the run-down stitches beyond "wave crochet needle"?
2. How do I tell which ones are twisted for sure? I am not great at reading my knitting yet.

Any help in fixing this mess is much appreciated. Thanks!