Turbo oil line damaged during accident

[Stantiva]

My 2010 X5 turbo diesel was driven over a curb and ended up with the right front wheel suspended over a ditch and the car resting on the frame. After backing it out I saw large plastic chunks of the underbody shields at the running board area and oil dripping from the frame near the wheel. I could not identify the source of the leak but it was severe enough to call a tow truck rather than risk driving 100 miles to a shop.

The dealer provided quotes for the panel damage and had a tough time finding the source of the leak. Ultimately it was identified as the oil pressure line feeding the turbo. Dealer states that this could not be a result of the accident and will not submit a quote to insurance. There was NO leak before the accident, There was a significant leak immediately after. Can the shock that resulted in such damage result in a fracture to the oil tube? Dealer insists it is not possible