He feels that the Rockets are treating him like a spoiled brat and do not have proper protocols in place so that he can feel safe in the work environment. So it could be a variation of things. I have met people with OCD that require routine so badly that they can freak out if something as little as a waitress taking too long on his order so he things they are poisoning him.
Not saying Royce is like this but it could be a variation of things that for confidentiality purposes the team and Royce agree it should remain private.
Frankly put, nobody knows. This is why it's unfair to put the blame on Royce. Sure the problem derives from his conditions but it is not his fault that he has these conditions.