Haha, Miura's such a tease. What an episode to choose to switch sides! But then again, what better time to do it than after a huge cliffhanger (classic narrative technique that makes the reader devour the story).
Anyway, great spectacle there, I'll never tire of seeing transformed apostles going toe-to-toe with other mighty foes. Although it feels odd to see Zodd being "just a guy" among the rest of the army. I feel sad for him, though it's the life he's chosen. It's a bit reminiscent of when Guts was fighting as a mercenary.
Moving on, that Falconia's armies would go against astral creatures was expected, but it's interesting that these giants are shown as being the obvious bad guys here. I'm curious to see whether future developments/revelations will cast the situation under a more ambiguous light.