The DNA on any "object" could very well be anyone's, including Kim Roberts Pittman's, mixed with the accuser's. It is not a pleasant thought. However, that is all beside the point -- the accuser stated that there were no objects used in the alleged attack. Case closed. I predict that the judge will toss this entire case when the evidentiary hearings take place.
remember an object can be a sink, a toilet, a tub, a doorknob, a counter