How to get rid of that damn Exchange setting in Outlook 2010

After setting my new Office 2010 Plus, I tried to setup the office email account on Outlook 2010.  Seemed like the server couldn't be connected, so I was like, what the heck, and planned to get rid of the setting.  That's when my hell started.  I tried to remove the account, but the Outlook wouldn't let me, and didn't even give me a UI to move on.  Instead it just exited.  Goggled a bit and found that I can run "Mail" to change the setting.  But trying to trying to delete the setting and I kept getting error message saying I should do this and that.

Finally I found the ultimate way to delete all the mess: delete the "profile" in "Mail".  Problem solved.