Return home button needs to always be available. If game refuses to load a zone for you, which has started happening to me with guild hall, your only option is to wait for half an hour or however long it takes for return home button to refresh. You also don't dare use guildhall because if it decides to crash you when you try and zone in you're out another 30 minutes. It feels like it has something to do with the server issues specifically with AB and slow loading times etc though why it only happens with guildhall I don't know.
