Hillary is waiting, this Bill thing could be deadly if she decides to jump in. This is not over yet.
There is not going to be a ballot switcherooo.
It's too late, even if she wanted in. Ballot deadlines have passed in some states, and will pass soon in some others.
In addition, changing candidates now would assure defeat for the Democrats as it would show them as supremely weak.
No. Hillary will sit and wait for 2008.