It will be very interesting to see how this works out.
While I agree conceptually with the majority of people that it's just tough luck, take off our hat or you don't work, legally it's not that cut and dry, and as fosse76 says the burden is on Disney to "prove" why wearing a turban would ruin the "show". To the outside world, a guy who works serving burgers at Pecos Bills is no different than a guy who works at McDonalds, you've got to remember that that intangible "magic" is just that, intangibile and would be hard to prove that the headwear of an employee in a protected class would "ruin" it.
That said, I also think fosse76 is absolutely correct that it will be settled, and this guy will probably get a small chunk of change out of it just to get rid of him and it. Disney doesn't want to get into it with another religious group, they have enough issues with the Evangelicals.
AEfx