Good for selfbondage?

I spotted this image and felt it was perfect for selfbondage. The woman’s hands are bound behind her neck, with thumbcuffs in place as well as ankle cuffs. A chain (tightly) links the ankle cuffs to the handcuffs. Is escape possible if she unbinds her hands—assuming there is a way to provide or access a key—or would that be impossible? … 110739.jpg