I never really thought of Palin as a strategist. But on this one, I suspect the same thing. She may be suggesting Obama replace Biden with Hillary simply knowing that her suggesting it will absolutely forbid the narcisist in charge from doing exactly as she suggests.
Obama would look week by following the direction of Sara Palin. Therefore, Biden stays where he is.
I have begun to think Palin is suggesting it as "reverse psycology." BTW, that only works in idiots so we'll see.
“Please don’t through me in the briar patch!”