As he starts unscrewing the panel leading to the crawlspace, the eyes of all the puppets follow him.
But none of them move from where they lie.

So if Oliver just leaves them there where they watch him, the panel comes off and leads to a narrow space that once provided access to wiring, piping, insulation, and so on. Left towards the bridge (more or less), or right towards the part of the HQ that's buried in the ground. Careful to duck under dangling severed wires, and not to fall through a hatch to a lower level.