AJ had to ground the fleet, one of the reasons being an impending lockout would otherwise result in pilots on the job & not focussing on tasks at hand.
I assume AJ did the same sort of risk assessment during the "alleged" death threats earlier this year.
To play devils advocate, most large companys with health and safety department that is corporate/ legal focused, take the view that if there is a chance you may be mentally impaired or distracted due to what ever personal/professional circumstances, and you are in a profession where you can harm yourself or others, then you don't work.