[quote=@Lurking Krog]
[@Guardian Angel Haruki] How would you like to resolve this. Aurora is set on releasing the owlbear regardless of Brutrumukk's hand swatting. Contested Strength/dexterity, sleight of hand?
[/quote]

I would say contested Sleight of Hand checks from both Aurora and Brutrumukk, because whether Juniper is freed or not comes down to the locks and pins keeping the harness on. Brutrumukk is going to want to keep them in place.