I am fairly certain that the Arabian Air Pass requires a ROUND TRIP ticket of a minimum value ($250 when I last purchased a pass) issued by EK.

I suggest that you read the fine print on the T&C before you jump into "New York State Attorney General, Peter Greenberg, the New York Times, Conde Naste among others." route.

Keep us informed.

(By the way, there is a bus that will take you from Dubai to Muscat and return for a fraction of the cost - about OMR 6 from memory.