Marc left at the same time so i assume that many of the reasons are similar.
He's right tho, Royce is in a kind of BJJ no man's land, his sports BJJ is nowhere near as good as other members of his family and his mma BJJ has been somewhat tarnished by his schooling by Hughes.
Alright, from what I heard . . . and this is third hand so take it for what its worth, Marc left Rorion and the Gracie school in Torrance at about the same time (within a couple of days) that Chris Brennan left. Marc and Chris were roommates and they both were teaching at the school at that time.
Marc, supposedly, left because he wanted to enter tournaments and was told that he couldn't.
Now, I can understand leaving an instructor who won't allow you to compete but that still doesn't explain the animosity.