Uberconference Hidden Hangup Button

I was on an uberconference call the other day and the leader of the conference mentioned how they had the ability to disconnect anyone on the call with a "Hangup" button next to the mute and profile buttons. Looking at the interface a caller with the icons expanded looks like this:

Now let's inspect... Going down to where the profile and mute buttons are located it looks like there's one more, hidden button available:

Removing the style="display: none;" attribute from the div causes the button to show...

It's funny because it actually works. If you click it the person gets booted from the call, even if you aren't an admin/call leader. Web is hard.
Thanks for reading.