unable to destroy-model with offer in it

I had two controllers with prometheus offered. I then tried to destroy the controller and it hung for over an hour trying but unable to destroy. I ctrl-c'd the destroy to see that it says "found 1 application model not empty" but it's hung as the prometheus application states that it's waiting for a machine while the model will not kill things off.

juju status --format=yaml
model:
  name: default
  controller: bigbrother
  cloud: google
  region: us-east1
  version: 2.3-beta1
  model-status:
    current: destroying
    message: 'attempt 2 to destroy model failed (will retry): model not empty, found
      1 application (model not empty)'
    since: 18 Oct 2017 14:13:34-04:00
  sla: unsupported
machines: {}
applications:
  prometheus:
    charm: cs:prometheus-5
    series: xenial
    os: ubuntu
    charm-origin: jujucharms
    charm-name: prometheus
    charm-rev: 5
    exposed: true
    application-status:
      current: waiting
      message: waiting for machine
      since: 18 Oct 2017 08:20:43-04:00
offers:
  offerprom:
    application: prometheus
    charm: cs:prometheus-5
    endpoints:
      target:
        interface: http
        role: requirer