Captain's mistake was calling/authorizing call for law enforcement
Have I missed something ... Where has it been quoted that it was the Captain that called the cops?
In my experience when there has been trouble down the back, and "yes" I have been involved in overpowering a disruptive passenger on board an in-flight DC10, the flight crew have well and truly locked themselves in the flight deck even if they are peeping through the peep hole to find out what the **** is going on down the back.