'Well, it's a good thing that we weren't banking for that formation to work in the first place.' Apostle Matthias thought as he watched the formation crumble from a single blow from Wrath.
Judging by the expressions of his comrades, it is clear that they too expected something like this to happen and they weren't surprised at all. This allowed them to remain calm under the great pressure that they were feeling.
Matthias watched as the maddened dog Wrath cleaved a path for the rest of the Sin Demons. He harvested the lives of lesser Celestials like he was reaping wheat.
It was clear that their numbers were useless against the Sin Demons. Killing one lesser celestial or killing hordes of them makes no difference to them. The lesser celestials aren't fit to be cannon fodders in this fight.