The conversation between Dimitri and the judge about other leads was a long one.
Leonard's men were unbound by the 'no killing or kidnapping' rule that George's men followed. And so, they were able to get to the bottom of the fake ID used for the car that stalked Cynthia and Geroge on their date.
The brothers had evidence that the dealership registered the car under the fake ID only after registering the true ID in another book completely dedicated to dirty gigs like the one that was pulled that night. The ID belonged to an employee of Green-soft, and since it was done while Henry was still in the hospital, the brothers bet that the ID holder will give out Sylvia's name in front of Garcia once questioned about it.