DeRogatis read the statement more than a dozen times in response to questions, including whether he once made a copy of the sex tape at the center of the trial.
Defense attorneys have said that copying the tape would have been a crime.
After DeRogatis' 10 minutes on the stand, Judge Vincent Gaughan said reporters' privileges don't apply. But the judge ruled that DeRogatis doesn't have to testify based on his Fifth Amendment rights against self-incrimination.