If you are testifying remotely, I suppose you are still under oath and have serious consequences for perjury ?
[1] https://en.wikipedia.org/wiki/James_Clapper#Testimony_to_Con...
but seriously, I'm not sure how much they expect from this. He does have a legitimate excuse of being cut off from all the corporate data, so he can just keep replying "I'd tell you but the bankruptcy ceo took all my data".
The only people who can do anything meaningful about SBF are working for the DOJ, and they don't do their work by holding public hearings.