On my 1996 Passat TDI the passenger door will not open from either the inside or the outside. From the outside I can tell that the handle has become unhooked. The central locking system appears to be working correctly (I discovered the alarm and I see locks and the red light working). What are suggestions to get the door open? We are contemplating removing the rear door so we can assess the screw holding in the latch mechanism. Are there better options?