Docker swarm leave --force results in "context deadline exceeded"

General
1

I was trying out the new swarm inside 1.12. After playing with service LB (global), my swarm came in unstable state.

Having 3 nodes:

Node1 - Manager + worker
Node2 - Worker
Node3 - Worker

So trying to remove all swarm related configuration

On Node2 --> docker swarm leave
On Node3 --> docker swarm leave

On Node1 --> docker swarm leave
Error response from daemon: context deadline exceeded

Tried also with docker swarm leave --force
Error response from daemon: context deadline exceeded SAME ISSUE

[docker@lxdocapt01 ~]$ docker info
Server Version: 1.12.1

Please advise actions to clean…
Walter