Break An Animating 3D Model Into Two Pieces during animation

I'm basically trying to cut a moving 3d character model during its animation into two pieces. I'm thinking about a pre-cut solution to prepare already cut objects and applying them when the character gets sliced. However, I cannot find the way to make the "cut objects" have the same pose as the original character in animation. How can I achieve this?. An example is in SuperHot where the enemy gets cut by katana, and while maintaining the same animating pose, it gets broken into two pieces very cleanly. I'm thinking about animating retargeting, which does not look very promising. Any other solution?