I bet they never thought of this.
This means that in actuality if the party feels that NEITHER Hillary or Barrack is the image they want to put out there -- even if the people aren't for it -- they can set up the superdelegates to vote so that a third person becomes viable...in this case perhaps Gore ... but I think they'd lean towards Edwards.
So then you would have Clinton & Obama with not enough popular-delegates against a third candidate with enough super-delegates no to allow either of them to win full nomination.
This would mean political tie ups like you wouldn't believe!!
And technically they may end up with a person who actually had never ran in the first place--someone they feel will tote the party line.