Unfortunately NO any-net +, selects the TV by Default. You must Disable Any-net + to be able to make Your AV Receiver become your default, But even then it can still slip out.
I have a 50D8000 and have been enjoying many of the features that AnyNet+ offers, except one. When I turn on my home theater everything is fine and I get sound and video from my Satellite box (on HDMI2). Then after about 5 seconds my SmartTV tells my Receiver to switch over to the TV Source.