The article isn't clear, but it sounds like what is happening is that Disney is outsourcing their IT jobs to a 3rd party contractor. That contractor has H1Bs on

The article isn't clear, but it sounds like what is happening is that Disney is outsourcing their IT jobs to a 3rd party contractor. That contractor has H1Bs on staff. Otherwise, hiring an H1B to replace an employee is illegal, but this is sort of a loophole.