Today was the first time I have had a proper look at the damaged right wing. The tip half isn't too bad but the root to end of the flap section is well mashed. The main spar is repairable but the drag spar is toast. The section of TE that carries the flap hinge has pulled away from the drag spar for the entire length of the flap. Also the top surface which extends back from the drag spar is also delaminated so the whole TE aft of the drag spar is floating. Of course the wiring loom has ripped the bottom skin away from the spar for over a foot.
Conclusion? It is probably beyond repairing to a reasonable standard.