How do I correctly delete records from Ember Data

ember data delete

Here is the problem:

I have a UI button that adds new instaces of a DS.Model (App.FarmAnimal....trolling here).  I am implementing a route-wide "undo/redo" system and I need to construct all actions such that an "opposite" action is also available.  I do not want to change a flag such as "isActive" on the model instance from true to false but rather I want to truly delete it.  If the model has been persisted, I will take care of alerting the user that their undo will delete a persisted model... This is not a concern.

I have used the following pattern to add a new model to the related Objects array of my parent model (App.Farm).

    App.Farm.get('farmanimal').createRecord({type:"pig"})

This works as intended but the reverse operation of deleting that record...not so much.

What is the correct pattern to target a record in the store and delete it?  Assume that I do have access to the specific record object.

Thanks!

Steve