Surprise, surprise, Mike Murphy is dissing Palin now. Many have speculated about Palin possibly forming a third party, or running as an Independent. I don't know. It's possible, but the reason I doubt it is that the same thing happened (she was rejected by the Republican Party) in Alaska when she ran for Governor. The Alaska GOP and those who traditionally backed Republican candidates fought her tooth and nail. She's never had a very loving relationship with the power structure of those in her party. The party boys out slamming her is nothing new.
As for a third party or an independent run, the party structure is already there, why not use it and just ignore the hype from the elite idiots? The day after she won the race for Governor, the Bob and Mark Show in Alaska (the DJ's are friends of the Palins) talked about how the Republicans did everything they could to keep Palin from getting elected. Here's the clip (they talk about ANWR for a couple minutes and then turn to Palin):
It's possible that she'll cut ties with the Republican Party, but it's more likely that she'd be a RINO, Republican In Name Only, only the conservative kind.