How can I programmatically disable IntelliTrace in VS2012?

Hi,

I am authoring a VS Extension that, like IntelliTrace, launches the debugee under a profiler. This means that the user will not be able to use IntelliTrace and my extension in the same debugging session. I'd like to give the user an option to disable IntelliTrace temporarily to resolve the conflict.

In VS2010 Ultimate I can disable IntelliTrace  programmatically using:

Dte.Properties["Debugging History", "General"].Item("ProteusEnabled").Value = false

However, in VS2012 Ultimate this just throws a NotImplementedException. How can I accomplish this in VS2012? 

Thanks,

 - Omer