Bubble X3 in middle of Clan Battle. Why?

I just noticed Rovio have tripled Bubble's power while there is an active Clan Battle going on.This means all scores prior to Bubble X3 are now considered low and pretty much ineffective.Are all clan battles conducted at the same time? If so, why would Rovio do this mid-battle? No doubt some players have paid 200 gems to try to beat their score. Rovio has effectively undermined all the time, efforts and even gems invested in the current battle.I hope there is a reasonable answer as to why, but I can't see it. All I see is a strong need for Rovio to explain this bizarre decision.