The drive can't break the cable. All it can do is quit turning it. The tach can break the cable if it jams. It's also possible that as you said, the guy changing the tire did something like forget to disconnect the cable and pulled the wheel out, bending the cable housing badly. You should be able to see if that happened. Even it he bent it straight you can probably see some evidence if you look hard. That's the kind of thing that makes me do all my own work.
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