Index: branches/5.2.x/units/orders/orders_event_handler.php
===================================================================
--- branches/5.2.x/units/orders/orders_event_handler.php
+++ branches/5.2.x/units/orders/orders_event_handler.php
@@ -520,8 +520,15 @@
 				WHERE '.$order_idfield.' = '.$order_id;
 		$this->Conn->Query($sql);
 
+		// Remember order ID for use on "Thank You" page.
 		$this->Application->StoreVar('front_order_id', $order_id);
+
+		// Remove globals, set from "_createNewCart" method.
+		$this->Application->DeleteVar('ord_id');
 		$this->Application->RemoveVar('ord_id');
+
+		// Prevent accidental access to non-Incomplete order.
+		$this->Application->removeObject($event->getPrefixSpecial());
 		$this->Application->Session->SetCookie('shop_cart_cookie', '', strtotime('-1 month'));
 	}