Added command to flush state manager in case of emergency.

src/main/java/com/sk89q/worldguard/bukkit/FlagStateManager.java

@@ -179,7 +179,14 @@ private void processFeed(ApplicableRegionSet applicable, Player player,
     public synchronized void forget(Player player) {
         states.remove(player.getName());
     }
-    
+
+    /**
+     * Forget all managed players. Use with caution.
+     */
+    public synchronized void forgetAll() {
+        states.clear();
+    }
+
     /**
      * Get a player's flag state.
      * 

src/main/java/com/sk89q/worldguard/bukkit/commands/WorldGuardCommands.java

@@ -124,4 +124,24 @@ public void handleError(String err) {
         }
 
     }
+
+    @Command(aliases = {"flushstates", "clearstates"},
+            usage = "[player]",
+            desc = "Flush the state manager",
+            flags = "", min = 0, max = 1)
+    @CommandPermissions("worldguard.flushstates")
+    public static void flushStates(CommandContext args, WorldGuardPlugin plugin,
+            CommandSender sender) throws CommandException {
+        if (args.argsLength() == 0) {
+            plugin.getFlagStateManager().forgetAll();
+            sender.sendMessage("Cleared all states.");
+        } else {
+            Player player = plugin.getServer().getPlayer(args.getString(0));
+            if (player != null) {
+                plugin.getFlagStateManager().forget(player);
+                sender.sendMessage("Cleared states for player \"" + player.getName() + "\".");
+            }
+        }
+    }
+
 }