Well, it may open the door, if there's a trial, to a wider look at Mangum's sexual activities before and after the party, and who those people were.
I wonder if Jakki-Jabba-the-Hut is willing NOW to come back on Greta, seeing as how she misled her and Greta's viewing public. Another liar in the family. We've heard from a grand total of three family members - Crystal, Travis, and Jakki - and each of them has turned out to be a pathetic, gross liar.
My guess is that the defense private investigators turned up enough information on the FA that led the defense attorneys to believe that there HAD to be DNA from other males (possibly known to the defense by now?) on the FA, and a huge red flag went up when that information didn't show up on the copy of the report they were given. Hence, they knew someone was withholding information, and it took more court hearings before they finally got the exculpatory information they should have received months earlier!
And as for Meehan? Oh you fool, you completely, utterly, clueless fool!