The problem is, it keeps falling. It wasn't just a one day drop after the news came out. It was down 5% again on Friday and as of the close is barely over $14 a share.
The main problem isn't the passing of JV. The problem is that there's no strong candidate sitting in the wings that can take over, and nothing has been said about a search for a new CEO. Normally when things like this happen the Board of Directors says who will be temporarily taking over, but also that "a comprehensive search for a new CEO will be taking place" No one has said anything about a new search though.
Sure SB is a good operational person. And maybe he'd be a good CEO. Although, what they probably want is just a "yes" man to take orders from Icahn and the board, so lots of people could fill that role.
If I had to guess I would say that any plans they had will be accelerated now. And if they didn't have any plans (fairly likely considering who were talking about) who knows what they'll do.