I suspect that these volunteers were moved to a hotel in order to keep them alive. A hotel is not a desirable military target ... at least it wouldn't be targeted
deliberately, ditto with orphanages, schools and hospitals, the places the volunteers
wanted as their postings. Since the military wouldn't deliberately waste a bomb on an orphanage, it made sense to everyone (except the volunteers) to have them posted at someplace that was attractive as a military target.
But these volunteers may have been moved to safety because the Iraqis - at least the ones who removed these volunteers - anticipate losing and don't want the additional trouble of being charged with the deaths of these non-Iraqi civilians.
I don't give them the moral benefit of that doubt.