Removal of only RIB graft - possible?

Hello. I got asian rhinoplasty 1 y ago and my nose has been increased in size with rib cartilage. I strongly dislike the new look of my nose and the graft make my nose unnaturally tall and too thin from front view. My surgeon said the graft cannot be removed because it gets incorporated to the underlying structure and he can only rasp the graft to make it smaller. I have 2 questions. Does rasping my rib graft will make it wider from front view ? Is it true that it cannot be removed ? thx