David Gregory via email to an aide of Mark Sanford:
[C]oming on Meet The Press allows you to frame the conversation how you really want to...and then move on. You can see (sic) you have done your interview and then move on. Consider it.
"Allows you to frame the conversation how you really want" seems to suggest that Stretch's show is The Republican Propaganda Hour. Which we knew. But this is a pretty air-tight confirmation.