alosso: Turn to the side or back. Once you're stuck in those earthen (not stone) walls, there's hardly another chance.
+1
I have played St A's and several links courses in Scotland where the bunkers are hell if you get close to the face. As a caddy once said to me, "ye cannay get oot dat way laddie"
But as Courteney says, better wedges give you a better chance, but play percentages and get the ball back into play.