(1) Slow down
(2) Unclip
(3) Stop

If you get #2 and #3 backwards, it'll be embarrassing.

Luckily, you're probably not going to fracture your skull or brake any ribs if you join the zero mile per hour fall club. If you haven't been riding with toe clips until now, practice the stopping thing some more. Know that a week from now, you'll be wondering how you ever went without them, and clipping out in traffic will feel as natural as eating lunch.