Sorry I don't want to get silly here, but there was a case over here, where an Electrician was nearly charged with Intentional Damage to a customers appliance when he cut the plug off of the thing to render the unsafe equipment unusable
That could happen here as well. Legally, the customer could report an act of "criminal damage," and have the guy charged. Such a charge is classed as a criminal offense (in U.S. terms, a felony). Sometimes trying to protect somebody is a thankless task.
