Elon Musk has stepped up his court fight with OpenAI by demanding documents from ex-board member <-bsp-person state="{"_id":"0000018f-16e9-d583-afbf-d6fd2dea0001","_type":"00000160-6f41-dae1-adf0-6ff519590003"}">Helen Toner-bsp-person>, who was a key player in the short-lived ousting of <-bsp-bb-link state="{"bbHref":"bbg://securities/1554630D%20US%20Equity","_id":"0000018f-16e9-d583-afbf-d6fd2dea0002","_type":"0000016b-944a-dc2b-ab6b-d57ba1cc0000"}">OpenAI-bsp-bb-link> Chief Executive Officer <-bsp-person state="{"_id":"0000018f-16e9-d583-afbf-d6fd2dea0003","_type":"00000160-6f41-dae1-adf0-6ff519590003"}">Sam Altman-bsp-person> <-bsp-bb-link state="{"bbDocId":"S4AMUTT1UM0W","_id":"0000018f-16e9-d583-afbf-d6fd2dea0004","_type":"0000016b-944a-dc2b-ab6b-d57ba1cc0000"}">last year-bsp-bb-link>.