I don't think Wright can fix what's broken. He just doesn't have the ability to get in and out of breaks with receivers quickly.
I think we have a better chance of the lightbulb going on with Joseph, who has the physical skills to be a top cornerback but lacks the football IQ. If we can get him to understand his responsibility when he's out there (and not line up outside when he has not defender to his inside or not jump a route when he has no help behind him), he could be pretty good. At least he's good on special teams right now, when he's not making boneheaded mistakes, so that gives him some value.
Wright's OK on special teams (nothing special) but I don't think he can change himself physically to be able to flip his hips faster or not be handicapped by his length, so I don't think he'll make it out of the preseason when he'll likely get roasted again.