Update #22 added this feature:
Added a feature where the killing bullet when the enemy turns into a ragdoll gets extra power, making it look more sweet
There are a few problems with this however:
This mod simply removes the feature entirely, given that it generally tends to look very bad.
Unzip to mods.
Note that this is handled separately from Shotgun push, so that will still work. This mod will disable that if you want.