Thank you for this clarification, and I think reading through the forum, Archblock has retained control of certain pool management namely the tfUSDC/TruTrading/Delt AI loan (and Alameda Loan). As these were not part of any assignment to the foundation.
Futhermore, the last fees were levied on these were also by for servicing these and it seems that some kind of management agreement is in force:
Having heard from other cases like this, at such a time like this, its probably best for the creditors to gather and seek a meeting amongst themselves for future collective action.