untie, unbrace, unlace -- (undo the ties of; "They untied the prisoner")
Overview of adj unlaced
The adj unlaced has 2 senses
unlaced, untied -- (with laces not tied; "teenagers slopping around in unlaced sneakers")
unbuttoned, unlaced -- (not under constraint in action or expression; "this unbuttoned and disrespectful age"- Curtis Bok; "unlaced behavior in the neighborhood pub")