Glad I'm not the only one who didn't quite understand that....2) would be the perfect explanation if David hadn't said the bombs were provided by Maximan. Also, the human cultists built one on Zenith's world, apparently under the direction of the Lloigor.
So I'll go with 1) or 3). But then, Maximan is bonkers, so maybe we shouldn't expect the plan to make perfect sense!
So I'll go with 1) or 3). But then, Maximan is bonkers, so maybe we shouldn't expect the plan to make perfect sense!