Someone else had this problem a long time ago and I can't remember how/if we resolved it. I'll look into it again but in the short-term you can probably just quit your browser and then relaunch. You should be logged out after that.

Hey Jeff, I tried to log out, and got the log out success screen, but then the next post I commented on was posted by my username. I can submit a video if you'd like to see it. Any ideas? Thx in advance.