The Cluster service on this node is shutting down because it has detected that there are other cluster nodes that have quorum. ...

The Cluster service on this node is shutting down because it has detected that there are other cluster nodes that have quorum. This occurs when the Cluster service detects another node that was started with the Force Quorum switch (/fq).  The node which was started with the Force Quorum Switch will remain running.  Use Failover Cluster Manager to verify that this node automatically joined the cluster when the cluster service restarted.