Get stretched. Check out the last few days from the Mobility WOD and see what might work for you, specifically this article about the use of ice for swelling related to injury.
It's a loaded topic and some of the posts questioning the position are well stated. Use it as YOU like, for temporary relief immediately post injury or post workout to prevent hyperthermic inflammation. Watch for more info on this when additional research (as some of the excellent referenced material in the post) emerges.