To get loose

to disengage one's self; to be released from confinement.
- Keary.

See also: Get

References in classic literature ?
At length, struggling to get loose, I had the fortune to break the strings, and wrench out the pegs that fastened my left arm to the ground; for, by lifting it up to my face, I discovered the methods they had taken to bind me, and at the same time with a violent pull, which gave me excessive pain, I a little loosened the strings that tied down my hair on the left side, so that I was just able to turn my head about two inches.
When this shower of arrows was over, I fell a groaning with grief and pain; and then striving again to get loose, they discharged another volley larger than the first, and some of them attempted with spears to stick me in the sides; but by good luck I had on a buff jerkin, which they could not pierce.
The natural occurrence causes "snow sharks," ancient beasts that feed off of humans, to get loose. Alexandra Mendeluk, Kate Nautra, Benjamin Easterly, Eric Scott Woods and Kelle Cantrell star in this 2014 B-horror movie.