Unless the pedals are pressed to the floor, the bands should be slipping anyway. Depending on if the clutch disk are stuck, the engine may just have to turn. Even with good adjustment, there is going to be some drag on the clutch disks when in neutral.
The other option would be to take the keys out of the rear wheels and reinstall the wheels, so they roll without trying to roll the engine over. This is not the best way but has been done in the past. You will need a hub puller and big hammer.