The automaker wins a preliminary injunction against Dimitrios Biller, who once defended Toyota in vehicle-rollover cases, but an arbitrator refuses to order Biller to return them. An arbitrator in a federal lawsuit filed by former Toyota Motor Corp. attorney Dimitrios Biller issued a preliminary injunction Wednesday blocking Biller from disclosing internal company documents, which Biller says show that Toyota withheld evidence in lawsuits alleging defects that caused serious injury and death.