Well, if the vault says you have COPD, and the devious bank robber is interested in your continued breathing, perhaps we can just review the footage after the fact.

This is one of those cases where you don't disable emergency systems to defend against rogue employees. If people abuse emergency procedures, you let the legal system sort it out.

A vault with firearms in the police station to which every staff member has a key. Sounds reasonable to me.

Users are not prisoners left in the burning building without a fire escape.