Practically? Probably not. They'd need to realize what the codes were and have some way to communicate with the station.
It's possible there's software on the laptop for that, but it would go through a central server connected to the satellite dishes/antennas, and was probably locked out when it went missing.
To add to that, there are people on the station who can presumably override anything sent from the ground. In fact, I believe one of their science videos showed them initiating a boost manoeuvre. As long as there are people up there, I'm pretty confident in the station's orbital stability.
Practically? Probably not. They'd need to realize what the codes were and have some way to communicate with the station.
It's possible there's software on the laptop for that, but it would go through a central server connected to the satellite dishes/antennas, and was probably locked out when it went missing.