How do I STOP impersonating a user in Telligent 6.1?

(I know this is 8.x, but there's no option to ask in Archive). 

I am an Admin impersonating a user; I no longer need to. I've signed out and signed back in, but I'm still shown as impersonating the user, with my name in parentheses. 

There's no such obvious "Stop Impersonating" button or option anywhere, and I no longer have access to the admin dashboard.