The CHOAM frigate left Arrakeen eastward, toward the centre of spice mining operations at the Splintered Rock. The clearance for this was reluctantly given by the Harkonnen on the condition that it shall last no longer than one day - the frigate takes too much of the landing field meant for spice operations."Peace demands solutions, but we never reach living solutions; we only work toward them. A fixed solution is, by definition, a dead solution. The trouble with peace is that it tends to punish mistakes instead of rewarding brilliance."
They leave a very disquieted Arrakeen. After the explosion, the pogrom, and now the imminent water shortage due to many water farms being overrun by sand vermin, the pyons are restive. The Harkonnen don't dismiss the rumours that the CHOAM delegation is responsible for the calamity, perhaps even cynically fuel related xenophobia and superstition in the Graben and Pan.
While insulated from the pyons, Dune Men may conclude that the CHOAM audit is deliberately subversive. [Every dealing with them has Suspicion trait.]