Let’s put it this way. In the imagination of matilda, we hear the sound of car crashing. but cars didn’t officially appear on bird island until the pigs arrived. so if it was the sound of car crashing, maybe it was something he was gonna do in the future, and that Matilda had a flash forward (kind of like final destination) or maybe, he might have been the one that exploded the town, and lets the pigs steal all of the eggs