tear loose from (someone or something)
To physically separate, often forcefully, from someone or something to which one was strongly attached. This phrase can be applied to both people and things. A noun or pronoun can be used between "tear" and "loose." I had to chase my dog down the street after he tore loose from the leash during our walk. Those bricks in the yard must have torn loose from the chimney.
break/cut/tear (something) ˈloose from somebody/something
separate yourself or somebody/something from a group of people or their influence, etc: The organization broke loose from its sponsors.He cut himself loose from his family.