Your last sentence calmed me down as i know nothing about horses.It makes as much sense as his showing at the President's Cup. Normally when you see an owner selling that many horses, it means they're doing some serious downsizing or they're getting out of the business. Since he's still buying horses to race in the US, he may just be downsizing his UAE stable. Either way, it's enough to raise your eyebrows.
But why should he wants to do only horse racing in the usa? Maybe more money? What are you thinking?