But taking a programmer’s look at paws like this is ill advised. These laws are there to smooth the process of the state enforcing whatever the most powerful lawyers involved in a particular matter want. No more no less.
Much as someone could interfere with use a car by locking something to it rendering it immobile, perhaps. If locking the boot to it isn't a crime under the very same law, unlocking it surely also isn't.
I do agree that the law is whatever a lawyer can successfully argue; I bet there are lawyers who can successfully argue that unlocking the boot isn't criminal trespass.