Briefcase Lockout

[btabke]

- I have a pdf in a briefcase.
- I click on the file to open it.
- It opens the pdf within Zimbra.
- I can never go back. It won't let me back into zimbra after opening the pdf.
- The only thing I can do is right click on the icon in the tray - close zimbra and reopen it.

(win7 desktop)

Is there another way?

[btabke]

so there is no way to back out of this - short of killing and restarting zimbra desktop client?