I don't recall ever hearing the President, or any prominent Democrat politician, say that Obamacare was so flawed it would eventually have to be transformed into single payer, socialised medicine.
But -- I have heard progressive talk hosts say that this would probably eventually happen because of the perceived flaws in the law, and almost every local Democrat I know (most of them progressives) say the same thing -- they say it was a flawed law, that it will not work, and Congress will eventually have to "fix" the law and go single payer.
So the conservative talk hosts aren't pulling these ideas out of some conspiratorial hat. They probably have heard the same things said by some Democrats.
Again, it's all part of the plan.
http://www.youtube.com/watch?v=Kvg8qVKZYuM