Safe Dispose corpse
A quote from MCP desription:
Safe dispose corpse. Actors are not fully treated as dead until their death animation is complete and they can no longer move. The final processing of an actor includes script triggers. Prevents a corpse from being disposed until all game mechanics on the actor are resolved.
In theory, we can use pretty the same approach - increment death counter manually and run disposed actor's script instantly in the death animation was not finished.