It's worse than that. The quote itself is laundered. Nobody is claiming to have heard it.
The punch line from this so-called story is delivered by a Drive-By reporter who heard this gossip from God-knows-who, who heard it from "campaign insiders", who herd it supposedly from Mark Salter who herd it supposedly from John McCain.
Who are these so-called "campaign insiders"? Even the reporter doesn't claim to have gotten this so-called quote directly from the so-called "insiders".
The entire story is pathetic.
I also think this may be designed to put Palin in the least flattering possible light in London. We know who she is and what she is about here, but I bet you average Joe on the street in London thinks that she is a nutter!