If you want to get around publishing the applications through PNAgent or Web Interface you can use this method to run streamed applications. Obviously don’t call support if this doesn’t work…use only for testing, but it’s an interesting article and definitely helps understand more about the streaming architecture of Citrix XenApp.
http://community.citrix.com/display/ocb/2009/03/05/App+Streaming+-+Running+apps+via+RadeRun