Then he could fill it up with a bunch of govt. surplus old wood desks and old wood chairs with no padding. Put them about 4 feet apart. No phones, no faxes, no internet connection and a cell phone jamming system that broadcasts in about a five mile radius.
Then start "assigning" anyone he can't fire to a desk in that warehouse and tell them that's their job from now on, sit at that desk, 8 hrs a day five days a week, no expense account, no per diem, one 30 min lunch break. Get there at your own expense and if you aren't at your desk in 3 days and every day there after you no longer have a job.
Put one legal pad on each desk, one pencil and put one pencil sharpener in the entire place. Tell them to take notes and put the notes in that big paper shredder by the door on your way out at the end of the shift.
He could "hot bunk" the desks like our military has to do from time to time. Three 8 hour shifts, Susie Q gets off at the end of her shift and Ronald B. takes his shift at the same desk and so on.
Interesting because what you describe is pretty much what SBC did to the legion of princely executives at Pacific Bell back around 1999/2000.
Trivia: In 1999 Pacific Bell owned/leased more jets than Southwest Airlines did.