Broken doorknob- immediate help needed

hey folks, we have a minor crisis at home, and I am completely unable to leave work to try and do anything about it.

Our bathroom doorknob, one of those old-fashioned glass doorknobs, has decided to fall off with the door closed.

The screwplate isn't coming off, the door sticks in the frame but sticking a knife or something in there doesn't seem to help, and there is only that one bathroom in the apartment.

Phone call made and email sent to landlord...but for all I know, he's up in the Yukon territory right now and won't get the message for a day or so.

Oh, and I don't have the money to call a locksmith.

HELLLLLLLP!

Ideas, suggestions, anything.

edit: Nevermind, crisis averted, door open. Yay for illegal weaponry!