The way I understand it, this car was taken in by a garage for 'seat installation'. I presume this means after market seats.
The car disabled itself during installation. The OP assumed due to an anti-temper device, but it could have been any failure mode. Most modern cars with airbags will have sensors in the seats to disable some of the airbags if there is no passenger sitting there. So it is no surprise that any type of work on the seats puts this system in an error state. Especially on high-performance cars it is not unusual that the car immobilises itself when the safety systems are in error state.
A certified dealership will have the computer interface and software to reset the fault mode. For those that do not have this software, Ferrari can remote into the car and reset it for you. This requires connectivity though. This is actually quite a common thing on luxury cars.
This has nothing to do with 'smart' modes, remote hacking capability or disabling a car while in motion. The fact that the manufacturer can remote into their cars, does not automatically mean that the car is vulnerable to remote hacking. This is, in fact, a safety system that kicked in.
The solution here was probably simple: bring the car outside, and let Ferrari do it's thing. Or trailer it to a certified dealership to have it reset there.