When you've got your little gremlins crawling through Active Directory and deactivating people's security badges and login Ids, he absolutely can.
This is the dream of the Silicon Valley "Network State". One in which individuals can be fully segregated and insulated from one another through digital security protocols. In a heavily surveilled, digitized, and highly authoritarian workplace like a federal bureau, the people in IT hold immense direct personal control over the rest of the workforce entirely through their handle on the security hardware.