Mine

Index: D:/workspace/GameServer/java/net/sf/l2j/gameserver/model/entity/Siege.java
===================================================================
--- D:/workspace/GameServer/java/net/sf/l2j/gameserver/model/entity/Siege.java	(revision 233)
+++ D:/workspace/GameServer/java/net/sf/l2j/gameserver/model/entity/Siege.java	(working copy)
@@ -292,6 +292,7 @@
             }
             else if (getDefenderClans().size() > 0)     // If defender does exist (Pc vs Pc)
             {
+            	/*
                 if (_IsNormalSide)
                     _IsNormalSide = false;              // Atk is now def
                 else
@@ -303,6 +304,21 @@
                 removeFlags();                      // Removes all flags
                 getCastle().removeUpgrade();        // Remove all castle upgrade
                 getCastle().spawnDoor(true);        // Respawn door to castle but make them weaker (50% hp)
+                */
+            	int ownerId = getCastle().getOwnerId();
+            	
+            	getAttackerClans().addAll(_Defender_Clans);
+            	getDefenderClans().clear();
+            	getAttackerClans().remove(ownerId);
+            	//getDefenderClans().
+            	addDefender(ownerId);
+
+                // should be teleported to flag ?
+            	//teleportPlayer(Siege.TeleportWhoType.Attacker, MapRegionTable.TeleportWhereType.Town);     // Teleport to the second closest town
+                //teleportPlayer(Siege.TeleportWhoType.Spectator, MapRegionTable.TeleportWhereType.Town);    // Teleport to the second closest town
+
+                getCastle().removeUpgrade();        // Remove all castle upgrade
+                getCastle().spawnDoor(true);        // Respawn door to castle but make them weaker (50% hp)
             }
         }
     }
@@ -1103,8 +1119,7 @@
 
     public final List<L2SiegeClan> getAttackerClans()
    	{
-        if (_IsNormalSide) return _Attacker_Clans;
-        return _Defender_Clans;
+        return _Attacker_Clans;
    	}
 
     public final int getAttackerRespawnDelay() { return (SiegeManager.getInstance().getAttackerRespawnDelay()); }
@@ -1130,8 +1145,7 @@
 
    	public final List<L2SiegeClan> getDefenderClans()
    	{
-        if (_IsNormalSide) return _Defender_Clans;
-        return _Attacker_Clans;
+        return _Defender_Clans;
    	}
 
     public final L2SiegeClan getDefenderWaitingClan(L2Clan clan)