No 
flex zone doesn't apply to Stephen Curry.
No flex zone doesn't apply to Stephen Curry. (USATSI)

Congratulations to the New Orleans Pelicans for making the playoffs. Your welcome to the playoffs present: 19 points from Stephen Curry in the first half.

The Pelicans just couldn't contain Curry or his muscles. 

For Curry, the Oracle Arena is most definitely a flex zone.