You're letting me down DJ, I know you have a better imagination than that, and besides, this has been covered before.
First of all, not a a vial, a q-tip. Second, presumptive only, could have been panty-DNA swabbed onto a blood stain of DW's from the scratches that we know he got that weekend. Third, all of Danielle's blood in the VD house would be more than enough to swab up and move to DW's MH. What about all the blood spots on the stairs that were "not analyzed" ?!?!?!
You're slipping on us.