"Diamond Cut Diamond" Ball Busting kick

AKA:Witness To A Kill

The hot redhead Woman Hostage(Michelle Bradshaw) is handcuffed to a tree, wearing a red dress, and heels. One of her captors is walking backwards towards her kind of crouched in a tactical position, and she gives him a hard kick from behind. It's a quick cut, but you can see the point of her shoe bust him, and as a bonus, as he falls to his knees holding himself, she does a nice roundhouse kick to his face to finish him. This movie is often on the showtime, and The Movie Channel channels. The kick is early in the film, about 10 mins in.