Hi,
1. Exploding crates in WxW is legal. But you have to collect your crate before attack. So if there were two crates, you can collect one and blow the other up. Since Berria blowed up his own crate, therefore he didn't collect and it was cow. He didn't CBA.
2. At 10:47, BaNcA cowed by not touching the top-right wall. He didn't WBA.
3. At 12:43, BaNcA cowed by not touching the middle wall. He didn't WBA again.
The game got finished 2 cows by BaNcA and 1 cow by Berria. The game stands.
If it was only Berria's cow, yes the game would be deleted.