From over at BJJ Heroes:
The short of it that is Caio's version of events:
"Before I accepted to help I talked with Cesar, at first he wasn’t very nice about it and did not want me to go. After I talked with him about it more he said he was joking around and it was OK I wasn’t quite sure what changed his mind. As for his public reaction it came months after he knew and the day before the event, unfortunately, especially for my students at CSA, he does not want me to help with Gracie Fighter or be affiliated in any way."