Thanks, I'll bring a backup bag incase they won't let it through.
I pack a Priority Mail prepaid flat rate envelope, pre-addressed back to the office. Wadded up USA Today makes acceptable padding in most cases. Ask for permission to mail it home. There should be a drop box somewhere for USPS or the airline should drop it in outgoing.
What ever you do, do not take it out of your carry on. Let them find it. They probably will not.