i remember this being brought up before, shortly after the incident, but couldnt find the source on it
realistically, this is probably a case of "low rank ufc employee not wanting to disrupt what the biggest UFC star wants to do and be singled out/fired for not obeying him" more than it is conspiracy.
This is the likely answer. If it can somehow be proved the ufc orchestrated it though, Chiesa and Borg are looking at nice pay days.