I don’t know a lot about Brooks saddles, but it looks to me that the frame is racked not bent. That would explain why you feel the crash wasn’t forceful enough to bend the frame as much as it shows. I would be tempted to grab that nose block with an adjustable wrench and twist it around and see if it squared back up. It’s a little hard to see in your photos but at very least loosen up the tension screw and see if it starts going back to straight.