You'll see the meal stop moving roughly 1/3 of the way down his body, in the stomach. At that point it is okay to move him back home.
I would really have to disagree with that.If your snake still acts hungry after it eats, feed it more.
If your snake thinks everything that moves is food, let him sit 30-60 minutes to cool down after feeding, or if it's an adult, you can move him with a hook. I have a few that I have to handle like that- especially the expectant mommies!