Josh Kerr quitting the WCT, "it's holding me back"

You all remember that insane rail grab flip thingy that Josh Kerr pulled off in the final at the Gold coast Quiksilver pro against Mick Fanning. I remember watching that final thinking damn Mick is in form, and when he had Kerr combo'd was like there is no way in hell anything Kerr does is going to pull this out of the bag for him, and I was right. But then he pulled that move, probably the