Delete Stacks/Services that lost connection to droplet at digital-ocean

Hey all,
I’m on T&E with Dockercloud and Digitalocean. Trying Stacks, Services and Stuff.
Trying Source- and Cloudproviders and so on. Just playing around.

Unfortunately a while ago I’ve deleted the droplet over at DO that was connected to a stack/some-services here in dockercloud.
And now I’m not able to cleanup/delete stuff here in DC with errors:
ERROR: some-running-service: Unable to connect to the node

Sure. It’s not there, I’ve deleted the droplet. But I want to cancel/delete/terminate that stack/service anyway.
Reset my docker cloud and start over. Is there a way to “hard-kill” stacks/services or something like that?