That could be, since ABC reported that the semen belonged to the stipper's boyfriend. It's likely, if that's a true report, that the boyfriend has an arrest record.
And it would have to be for something relatively serious if his DNA is on record. Maybe another rape.
It could be the false accuser told SANE/LE she had sex with her boyfriend in the day/s before the party, and a DNA sample was taken from him to distinguish his "consensual" contribution from their "forcible" contributions. He may not have a record, but given her known paramours he probably does.