Not being a bus driver equiped with RR engines please forgive errors in technical detail.
When AI mentioned the failure at the Airbus Safety Conference they said that all the blades from the second stage LP turbine had seperated (I think they also said the third stage). The slides clearly showed that all the blades from these stages were missing. The turbine discs were however intact. The "C" sections on both sides of the engine were missing.
Damage was done to the leading edge of the wing and slat, as well as some damage to the underside of the wing.