The monster horde threatened the Hafner mechs as well as the Vandals. Ves did not believe that the Hafners had implemented too many controls in the genetically modified monsters. Ordering them to group up and sweep through every mech on the Kamwin continent was a double-edged sword. Short from ordering them to disperse their horde, the Hafner mech pilots might not make it through the monster wave alive unless they possessed another failsafe.
The Vandals couldn't let their opponents pull out another trick. They needed to end this battle quickly or at least take care of their primary objective.
After the Hafner mechs punched through one of the Vandal wings, they attempted to widen the distance.