@Waahash: what version of AnarchyTalk are you using? The 2.0.x version should have better widget-code.
Android apps isnt supposed to have an exit button, the system takes care of that by itself. Just log off and leave the app and Android kills it when the resources are needed.
The icon in the notification area should disappear when logging out, but sometimes it doesnt if you get a timeout in the communication with the chat server.