Huh, maybe you should have kept them on, something big is there. You will achieve this ending by manually disabling the Warheads. You will achieve this ending by listening to 079, once you re-enable the door controls, SCP-079 (The Old A.I) will announce 'The Doors to Gate B are now open', you can either go to Gate A or Gate B. I guess we don't need a distraction anymore! You will achieve this ending if you successfully contain SCP-106. You will achieve this ending by failing to recontain SCP-106 (The Old Man) or either refusing to. This is how to achieve all the endings in SCP Containment Breach
Related Scp Containment Breach 1 3 9 How To Recontain Scp 106 SCP-049 | Demonstration | SCP - Containment Breach (v1.3.11)