Shim Soo-bong's attack on her junior wasn't on social media

She went straight for the target while holding the microphone during her next performance.
She even went as far as looking for her manager, completely humiliating a junior singer.
I thought she might have made a mistake thinking it was on social media, but this is surprising.
Is it like Cho Yong-pil attacking a duck right after a duck's performance?