Report: Odds of a Castle write-in bid now 50/50?

I am hearing from a credible source that Castle’s odds of mounting a write-in campaign are as high as 50-50. They believe they can win, and lots of anecdotal evidence that I can share tells me this: most independents and even many Democrats are very unhappy with the choice between O’Donnell and Coons. People are telling me:

O’Donnell is awful on personal character but right on the public policy issues.

Coons has outstanding character who will be a rubber stamp for Obama-Biden.