It seems to me that all agreements and other documents that describe the Hotchalk arrangement must be examined, confidentiality be damned.
It looks as if a massive fraud has been perpetuated on Concordia with the connivance of many of their staff as well as whitechalk staff.
I am sure they have documented all payments as fees for services - look clean and closed, but were not. This fraud was performed by people who wanted it to stand up against an audit, so a true work preformed audit is needed. Count their hours, examine their travel logs, looks for cheats at all levels. I do not know if Concordia can be saved - those documented fake debts need to be expunged.
Audit thos fees for services, ask if these service were performed to a proper standard - my bet is they were not, they were documented but not performed.