I think a key here is that the employee was a Software Development Manager. This makes it more likely that they had the ability to install arbitrary software and likely had elevated local privileges on their work machine. Non-software development employees at Disney probably have more restrictions.
It sounds like this employee should have known better than to install a game, and a random mod for the game on a work machine.
It sounds like this employee should have known better than to install a game, and a random mod for the game on a work machine.