Well, this episode certainly just got more interesting! I hope that the fact that the Ultra Guardians have to deal with two Ultra Beasts who are fighting each other means they won't be able to resolve the issue or capture the Ultra Beasts with slightly comedic solutions, like with Buzzwole and Celesteela, and might actually have to battle the creatures in order to subdue them. I wouldn't mind seeing a combination of battling and something similar to what the girls did in the Celesteela episode, such as creating a barrier around the area where the two Ultra Beasts are battling. Since we now know the Ultra Guardians aren't limited to using only their own on-hand Pokémon and can command the Ride Pokémon, that opens up more opportunities for some of the non-battlers to have a larger role.
I wonder which Ultra Guardian will get the spotlight this time. Kiawe got Buzzwole, Sophocles got Celesteela, and Ash is Poipole's guardian, so if the writers intend to continue that trend, then it only stands to reason that one of the girls will get the focus here.