Nah the iCloud crap is literally just another account. Up until the moment you login to it, then it silently ties the device to that account for "security" purposes. I kept emailing the IT guy back saying I don't know what I can do, I can see a list of devices here and that laptop has been removed from it.
After him asking me for help repeatedly I felt I had to just give up, give him the password on a slack call, then immediately reset it once he'd done what he needed.