It could have been one of the high-move 'A' dwagons that just got wiped out.
At this point, between the two remaining gwiffons and the Archons, Ansom might have superior maneuverability in the air. I doubt it will matter, though, since Stanley looks to be doing things his way again, and a direct assault on the wounded commanders over the lake would be just like him from what we've seen so far.