Ramie, keep this in the back of your mind, just in case....
If you really aren't ready to leave, ask a savvy ex-pat wherever you are if he knows a cool doctor who will write you an excuse saying you have a sinus infection and shouldn't fly for the next week. I did that one time, he even gave me prescriptions...I gave the documentation to my HR department and it worked like a charm. $20 cash was all I had to give the doctor.