Is there a way to remove an attribute from a Backbone model?

Reason being is I pass up extra data on save to perform certain actions, but then that data gets automatically added to my model

The documentation says to not edit the model.attributes directly, so the only other method I see to do this would be to use the set method and set the attribute to null, but that is not ideal

var myModel = new Model()

myModel.save({name:'Holla', specialAttr:'Please Remove me'})

myModel.set({tempAttr:null})



if(myModel.attributes['specialAttr'] == null){

    alert(Model does not have a specialAttr)

}

I've also tried removing it from the attributes property, but it doesn't really remove it.