Thats not how the production of documents work.
If they don't provide the trading data, the EC would come back to the court and seek a federal subpoena and when the marshals show up at the hedgefund offices, they would grab everything that can be moved.
Then their hard drives are scanned for emails and data paths. Their blackberries are seized and all their calls and data downloaded.
Finally, the EC would request third part subpoenas for market makers and DTCC to see who the shares were finally delivered to.
If they did something wrong and try to obstruct discovery or provide false information, they might actually face not only their claims been thrown out but jail terms for bankruptcy fraud and if the debtors worked closely with the noteholders then they might also get sanctioned and lose control.
GLTY.