Discovery can't ignore results in unresponsive hass.io

Configuration
1

I just updated to 0.60 today, and ran into a little problem. I want to have the Discovery-component running, but not for Hue or Telldus Live, but every time I try to edit configuration.yaml (through Configurator web interface), it doesn’t validate in Settings. I even pasted the sample from the component page and just changed the names to philips_hue and tellduslive, but it doesn’t validate.

discovery:
  ignore:
    - philips_hue
    - tellduslive

That didn’t validate. This, however, did:

discovery:
  ignore: - philips_hue
          - tellduslive

So I saved and restarted, resulting in the RPi being unreachable through both web interface and SSH. It gets an IP address but there no way for me to reach it.

Any ideas on how to format the discovery properly so it works, and any ideas on how to reach the RPi when you botch a configuration?