Believe me, if that wasn’t the right decision, you would be asking this question from an ICU.
That having been said, it’s fascinating to hear you’ve had such an encounter, anonymous. Normally, the legendary beasts of Unova only appear if they sense danger to the Pokémon that live in their territories, and even then, they typically only appear one at a time. To have all three appear at once must indicate that something strange is happening in Unova. Perhaps I’ll reach out to my Unovan contacts to see if anything big has been going on…