You can do this by creating an attribute inspector and specifying the div where you want the attributes to display.
var attInsp = new esri.dijit.AttributeInspector({
layerInfos:featureLayerInfos
},'attrDiv');
Next set the attribute inspector you created to the attributeInspector option when creating the Editor:
var settings = {
map: map,
attributeInspector:attInsp,
layerInfos: featureLayerInfos
};
var params = {
settings: settings
};
editorWidget = new esri.dijit.editing.Editor(params, 'editorDiv');
After making those changes if you run your app you'll see that the attributes display in the location you specified. However due to a bug you'll also see an empty info window appear. We'll fix this asap but you can workaround this by adding the following:
dojo.connect(map.infoWindow, 'onShow',function(){
map.infoWindow.hide();
});
I've attached a working sample.