It's also true that in this race Alonso was fortunate with his pitstop and the safety car. He could have easily had different luck and finished 10th, which wouldn't be such a big difference to Massa. Massa's big problem is that he hasn't done anything impressive for a long time. The best he does is almost get on terms with Alonso.
I can't see Ferrari taking on a very inexperienced driver like Bianchi. It would be too much pressure for a young Italian (he is Italian, isn't he?). Sutil is a bit too mad, and the image thing with the court case would be a factor. Kovy might be solid and good, but he didn't really impress at McLaren. I really can't think of anyone apart from Alguersuari who could fit in to cover the season while they make a decision about the long term drive. Who else is there? Trulli?