I just want to point out a few things that people are missing in their attacks on this crew:
1. No bus could be chartered
2. The crew would have been illegal to fly anywhere.
That said, this was a horrible, horrible display of professional leadership. I fully agree that the plane could have been taxied over to an FBO and been disembarked there. In the first hour, I could have called a number of local hotels to verify availability (sorry, my regional wages don't allow me to buy everyone rooms and wait for company reimbursement), and called a few local cab companies and had drivers sent out to take the passengers to their hotels. Once such arrangements were made, I would then let everyone off, letting them know full well what the plan was, and told them what time to report to the airport in the morning if they intended to continue to MSP on this aircraft. I would then tell dispatch exaclty what time the passengers were returning, and to decide whether or not they wanted this aircraft or a bus to move the passengers in the morning.
Sometimes YOU have to dictate and step on some toes to get the right thing done. Let TSA figure it out in the morning. If passngers can't get back through securiuty, then send a bus.
An FBO can come up with some way to get people down from the door height. One pilot can offload the luggage, and the other can supervise the passengers.
On September 11, 2001, no passengers were forced to stay onbaord a grounded aircraft for 9 hours. All those pilots, regional AND mainline alike, found a way to get everyone off their planes having landed at many offline airports in the process.
The actions of this crew are just plain inexcusable.
I think that every captain upgrade oral exam should have a few situation-type questions where these extreme circumstances are presented. While such the answers given may not be a grounds for failure, it gives the new captains a chance to THINK instead of regurgitate, and to discuss the scope of Captain's authority. The benefit of doing in in an oral is that it puts each captain on the spot, and requires each captain to come up with an answer. Even with prioir knowledge of the questions through gouges, the seeds of though are implanted and will help most captains when the time comes.