Some of the replies on this site "The Consumerist" are hilarious. Unfortunately, they are also what many of the people actually think about air travel. Just send another plane (it doesnt matter you dont have a crew to fly it, just send the plane). Just put us on another airline. (You know AA and TACA both have hourly flights to MIA, right? And they had seats for 100+ people...)
This happens all the time in out stations where there are limited flights, non operating airline handling, and maintenance issues. I've seen it first hand on US before and from several of the airlines we've handled in the past. One time, a company we handled had a broken plane for 3 days with no ability to get everyone on another flight or to charter a plane. Come back tomorrow. Oops, not fixed yet, come back tomorrow. Oops, wrong part, come back tomorrow until we finally found seats for everyone and they finally sent us a different plane to take the trip.