F5 making a passive node go active in pool without instruction

Should you not delete the connection on the serverside as the connections to a node is on the serverside.

From https://support.f5.com/csp/article/K13310

Deleting existing connections to the Disabled or Forced Offline node (Optional)

If after disabling or forcing the node offline, you want to delete all connections to that node, perform the following procedure.

Impact of procedure: This command deletes all connections to the node's specific IP and every possible service port.

Note: Connections to nodes are on the server side (ss-server) of the BIG-IP connection. Connections to virtual servers are on the client side (cs-server) of the BIG-IP connection.

Log in to the BIG-IP command line. To delete all connections to the node, use the following command syntax: tmsh delete /sys connection ss-server-addr

For example, to delete all connections to node 10.10.10.211, you would type the following command:

tmsh delete /sys connection ss-server-addr 10.10.10.211