Suppose for the moment that Hillary really does want to continue to fight for the Democratic nomination in Denver. Will it even be possible for her to put forward a strong argument that she should be the nominee?
Before yesterday she had three main arguments: 1) I have won more votes; 2) I am more electable against McCain; 3) The superdelegates don't have to make up their minds until August and can still choose me.
Today, the popular vote argument is very weak. The only way Hillary can claim to have gotten more votes is by counting the vote she got in the flawed and rejected Michigan primary while simultaneously giving Obama a big goose egg in Michigan. The "superdelegates can still choose me" argument is now also very weak. The superdelegates rejected her plea that they hold off making a decision, and they have decided strongly for Obama.
By August, she may no longer have the option of making even the electability argument. The simple reason is that there almost certainly will be no data to back-up her claim in August. Right now, there are polling data that support Hillary's electability claim. However, now that Obama has the support of enough delegates to claim the nomination, polling firms will stop polling the Clinton vs. McCain contest. Some already have. By August, any electability claim will very likely be nothing but a completely unsupported, naked assertion. The current polling data were not enough to convince the superdelegates to hold-off on their decision, much less to decide against Obama. The August polling data drought will make the electability assertion even less persuasive.
In short, Hillary will have only very weak arguments with which to try to claim the nomination in August unless something catastrophic happens to the Obama campaign before then. Given that, any mischief that Ickes wants to try to make in the Credentials Committee will have no traction. The superdelegates have already committed to Obama sufficiently strongly that even if Ickes got everything he wanted, it wouldn't make a difference -- Hillary still wouldn't have enough delegates to win the nomination. Hillary's hopes for the nomination now rest on nothing but a hope for a lightning strike.