[TOURNAMENT-HotA] Wizard OH

I don't know if this is a bug with Soda/HotA or just a random occurrence, but this happened.
In a game against Loentz, it was the end of the first week of the second month.
I was taking his city, and he attacked me. It was a fierce final battle; I had one stack of 132 ducks under antimagic, and he had about 3-5 Archdevils, 10-20 Imps + 220 Demons (I'm writing this from memory; Loentz has a screenshot) under antimagic. At the moment when the opponent kills my second-to-last stack (2 bears), the battle ends, my troops are defeated, my hero dies, and all the artifacts go to the opponent, and the castle is taken.
At first, we thought about restoring the game (by deleting the extra troops), but there are many factors to consider: first, the castle walls - how to replicate the holes and so on, the amount of mana, the number of rounds until the end of the spells, the troop placement.
As you can see from the above, the final battle was very intense. I had a significant mana advantage (there were no restrictions on using spells), but my ducks had -3 morale and +1 luck, while the opponent's had -3 luck and +1 morale.
The game was incredibly long; I had about 2 hours and 20 minutes on the timer, and the opponent had 0. We played for a long time, but this incident occurred.
The question for the organizers is, what should we do in this situation?
The question for everyone is, has anyone else experienced this? I encountered this bug for the first time.