Cluster stuck on "Creating"

Hi-

I tried to start a cluster through FireCloud's notebook feature this morning. Through the FireCloud UI, the cluster has been stuck on "Creating" for ~4 hours. This same status is reflected using the Swagger UI page.

I have tried using the Swagger clusters API to directly stop the cluster with no luck, getting this response:

{
  "statusCode": 409,
  "source": "leonardo",
  "causes": [],
  "exceptionClass": "org.broadinstitute.dsde.workbench.leonardo.service.ClusterCannotBeStoppedException",
  "stackTrace": [],
  "message": "Cluster amp-t2d-op/ldsc-cluster cannot be stopped in Creating status"
}

My main goal is just to kill the cluster, avoiding as many charges as possible. Do you have an ideas for the best course of action now?

Thanks.

-Tim