If someone wants to ascribe some deep meaning a single agreement with an unsecured claimant out of dozens for a relatively modest amount... and wants to believe it has some import to equity claimants...they can have at it...
However, the likely explanation is rather mundane. We know there was BioAmber Inc. property at that location and Wayzata would have been within their rights to hold it for their claim.
And if the property/equipment was worth more than $2000 in value, which is likely, then the agreement would make a lot of sense.
And there is nothing stopping PwC from entering into such an agreement with an unsecured claim if the result is a higher recovery over all.
"Harsh reality is always better than false hope"