Wade,
Don't forget that Flex Viewer questions should be posted to the flex viewer forum.
http://forums.arcgis.com/forums/111-ArcGIS-Viewer-for-Flex
The answer is that the widgets transition are controlled in the WidgetTemplateSkin.mxml under the com.esri.viewer.skins folder. You can create your own WidgetTemplateSkin if you wish.