It happened at the museum within the last few years. RRpicturearchives has shots from 2010 and the nose is fine. Whatever did it bent the nose but not the grab under the number board, like it ran into a pole or something. Stress folds are definitely possible. You should see the wrinkles on the side of a plane after a hard landing or two.
I'd try a heated screwdriver and work SLOW. I've done that for bent armor models and had decent luck.