I am thinking that a strip of carbon fiber under the bottom/top covering along the main wing spar would help a great deal for an already completed wing. but I don't think it is necessary to panic here. If the plane is powered within the recommended range and flown conservatively (can still be beautiful) you probably should not have a problem unless a lot more people chime in with broken wings. It's nice that GP will replace the plane if you beak a wing. Now how about the spinner, engine, servos, and receiver that were all smashed to heck and gone on the crash I saw.