The worst "Oh give me a break..." moment?

[FanofTom]

Tess" realizing Oliver's ability.

[bychance]

Tess realizing Oliver is the Green Arrow.

[zor-el]

One question:
The Checkmate castle is full of cameras....John has erased the memory of Amanda and (it is assumed) others, but, the cameras recorded everything on what happened! Oliver has turned off the system, but what the cameras recorded is still there or not?