In my place, an old lady whose neclace was being snatched as she was getting out of her car managed to kick the thief and defend herself. She explained the whole thing on TV and was a heroine for a few days.
Anything is possible!
I agree, letting go is probably the safest thing to do. But sometimes we are facing situations where we have to make quick decisions that we react differently and do something we thought we would never do.