It has certainly been spinning its wheels, and many little fellows have come along with many new perspectives. We don't lack ideas; those we have in spades. The problem is that we don't have any new experimental data that we could use to separate the relevant ideas from the irrelevant, the good from the bad, the useful from the useless. The highest-energy accelerator in the world is the Tevatron at Fermilab, which was built in the 1980's. We now have a pretty good handle on the physics at that energy scale; to get any deeper understanding requires more energetic collisions.
In the next five years a higher-energy accelerator will finally come online, the LHC at CERN. Then we will be able to resume progress.
Don't want to harp too much on this.
However, I lament the demise of the SSC. Sigh. What is done is done though. We will press on with the new tools that are upcoming. :-)
Of course the nature of this CSL-1 anomaly remains unsettled, but if this and associated tests were to hold up as indicative of cosmic superstrings wouldn't that affirm that the string theory concept is on the right track?