Unbind

[Sarah]

To remove a band from; to set free from shackles or fastenings;to unite; to unfasten; to loose; as, unbind your fillets; to unbind aprisoner's arms; to unbind a load.

[Ernesto]

Release from bonds or restraints.

[Renato]

to release someone or something from a rope, string, etc. that has been tying him, her, or it up: