NewsBusters: Joe Scarborough has expressed serious doubts as to his Republican affiliation, and made clear that House GOP whip Eric Cantor "is not my friend." But caution to those who assume Joe has gone left: he has clarified to this NewsBuster that his critique of the GOP comes from the Ron Paul-esque right . . . Scarborough's stunning comments came on today's Morning Joe in response to Dem Bob Shrum's taunting of Joe over his ostensible GOP membership, in the context of Pres. Obama's attempt to rescue Martha Coakley from the rubble of her campaign.