Translation of "to unpick" into Spanish

You're gonna have to unpick all this and start again.

Lo descoserás todo y volverás a empezar.

We are suspicious that the larger Member States seek to unpick the seams of the Community fabric.

Tenemos la sospecha de que los Grandes Estados miembros quieren deshacer las costuras del tejido comunitario.

And normally I have to unpick their little fingers from his arm.

Y habitualmente tengo que despegar sus deditos de su brazo.