Never mind the fin, I would be more worried about the orange glow coming from where No2 fuel, hydraulic, oil and alcohol lines are!
My guess regarding the fin, RFFS did not want to get downwind and this is the only direction to get the foam nozzle over the fuselage towards aforementioned No2. Damaged in the process.
Poor old girl, knew her well not so long ago. She will be back in the air do not worry about that
