Manny, get a laptop with wireless. Then you won't have to wait until offstage to post messages!.... just type away during the rests! (and sips of Chivas Regal handed to you by your on-stage butler)
(make sure that the keyboard is a silent one though!).
I sure wish our director would tell us ahead of time what he's going to have the librarians pull! We've got a concert in May with James Walker (flute, LA Philharmonic, Academy Awards, Tonight Show, NY Philharmonic) and only one chart has been distributed so far!