This mob is vulnerable to all forms of CC. Will only attack players if called by a Coilfang Slavemaster. If you CC the Slavemaster for a few seconds prior to actually pulling them, you can prevent the slaves from becoming hostile. This includes everything from Scatter Shot to Sap and Sheep. Just have the puller/tank damage the Slavemaster after a count of five and you will be able to deny them their cry for help.