"A little inaccuracy sometimes saves tons of explanation."
So it's looking like the Palin Plan will be to attack Biden rather than 'going to the top of the ticket', as most pundits have predicted, and then rely on spin to cast any counter-attack as bullying.
That makes sense, attacking is what she's good at. But I have to wonder if the tactical decision isn't based on the (profoundly flawed) premise that Biden will be vilified if he fights back. Let's remember that he was smart enough to figure out the game in the first place, and articulate enough to describe it in a way that got through to people. There's a good chance he's also going to be clever enough to pivot and fight back without looking like a bully. It's actually not that hard if you can hold your temper and keep smiling.
It could be as simple as acknowledging that "Yes, Senator Obama and I have had differences in the past, but so have you and Senator McCain. Why, you yourself hired a lobbyist to obtain earmarks for the town of Wasilla, and campaigned on support for the Bridge to Nowhere! So I'm sure you understand what it's like to have to change your talking points."