Nifong knows he only needs to get past the May 2 date of the primary election (I gather there is not even a Republican opponent for the general election), without looking bad in front of his base (Durham DemocRats). So I will not be surprised to see him try to string the process out for another three weeks and try to keep it from collapsing before then.
So today he goes to NCCU and tries to take the temperature of the crowd. Are they baying for blood? Or are they being swayed by the no DNA results? Assuming they are still agitating for charges, Nifong then consults over the next few days with his key supporters and contributors to sense what their current feeling is on the case. If the base and his key supporters are still wanting him to go after the Duke students, then Nifong takes his case to a grand jury and gets a true bill against three of the players, probably going after the ones who lived in the house.
During this time, Nifong publicly says little substantively about the evidence but does go to great lengths in interviews to talk about how people should let the justice system do its job, etc.
Weeks pass with little happening publicly, as the two sides prepare for trial.
Then, after the May 2 election, and probably well before trial, the case collapses, perhaps with the DA announcing that the charges will be dropped because the accuser is not willing undergo the trauma of having to testify, just wants to put it behind her, and the DA says he is not so inhumane as to force her to go forward.
I'd like to see WRAL reinterview those that were so upset at the story (as to implicate guilt upon the players) and ask the question: So, what is your (your groups) stance with the DNA evidence proving there is no guilt upon the players?