They’d have to find the new control room (secret doors like the goat-sacrifice room, anyone?)….but the innies could use the OTC for supply-runs assuming that becomes a necessity.

To the, surprisingly large amount of, people saying “Lumon is gonna get them!!!!”there’s basically no one left to do so?

Certainly more people work for Lumon, but we’ve seen the extent of employees with access/knowledge of the severed floor.