There will be a clear paper trail, because these events all happened over a few days. They were so desperate to get the funds ( from the customers accounts) to cover the margin calls..that they weren’t worried about a cover-up..they fully expected to put it all back in a day or to, and then bury the switch...
Sarbannes-Oxley and out-sourcing almost guarantee there is an extensive electronic trial almost impossible to erase.
The one requires archiving of all electronic communication and the second makes that archive outside the corporate sanctum.
My comment was more directed at the use of the “CIA” as an infallible authority.