The could easily simulate/test/prove their software in the engineering room without sending it out over the live feed and causing this commotion.
People screw up all the time in control rooms as the internet is full of examples (youtu.be).
Most of those examples were just the distracted commentators vs a royal screwup in the control room creating an embarassing sidebar, crawl, background or fullscreen.
I know there is an occasional screwup, but this seems purposeful to me.
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