I ended up messaging him and apparently he does not know either. Your claim seem like an unsubstantiated accusation with the objective of smearing someone without giving them the chance to defend themselves, without the ability to confirm, deny, debunk, or even apologize. This seems to be a common theme (such as when you did not give mst the chance to respond to the CAT allegations). It is sad that we have ended up in a Kafkaesque situation where the accused can't even know what he is being accused of.