He snickers as the Helper retreats.
A good smirk can go a long way, and in this case we mean that quite literally.

Once he's clipped the rope to his belt, he looks up towards the hole and whistles.

He whistles Dixie to be specific.

At once the ceiling begins to peel back, panel after panel, until there's a hole large enough to accomidate the gentle swinging of the now suspended bag.