I’m sorry to hear this.
First, well done for getting them that far into adulthood. Most boar trios fail in their teens and won’t ever make it to a year of age together.
Sadly as blood has been drawn you cannot reintroduce them. A full blood drawing fight is bond breaking and they are not likely to ever accept each other back. Attempting it would result in another fight.
Wilbur and Edison are trying to sort themselves and their hierarchy out as a pair. This will take them around two weeks so hopefully they will be fine together once they are through this stage.
Trying to add Orville back into it has the potential to, not only cause a fight between all three of them but to also destabilise Wilbur and Edison tryinf to function as a pair meaning you would risk having three single piggies going forward all refusing to live together.
Orville will be much happier being kept separate as he can interact between the bars but will now longer have to share territory or compete for dominance.
Provided Edison and Wilbur can function as a pair, then with a single and a pair, you currently have the best outcome of a failed boar trio.