Error on deactivating plugin

[cuuush]

I'm getting an exception when loading the Netbox Dashboard after removing phonebox_plugin from my configuration.py
The exception is:
AttributeError: 'NoneType' object has no attribute '_base_manager'
I've discovered after a lot of confusion that the problem is with the Event Log feature, as adding a phone number creates an event log entry. After removing the plugin and un-migrating the models, the Event Log throws the AttributeError.

What would be a good solution to get around this? The idea of "uninstalling" a plugin doesn't really exist in the netbox documentation. Is the only solution to go into the postgresql database and remove all references?