So.... you can just take those ankle bracelets off and throw them in the trash?
Wow...now I can get out of the house more.(/s)
The bracelet may actually still be on, but it is not functioning.
I do not think computer chips and other electronic technical do not work well after getting hit with a sledge hammer ( /saracam off).
Of course, hitting your foot with a sledge hammer might make your foot not function very well...
The person may not have removed it so much as disabled how it functions...