It takes around a month for their hormones to completely subside so give him time to heal and get better. In the mean time, try giving him lots of extra love and attention. Don't spend your time making him feel different. I know it's a different situation, but my bun was neutered 2 months ago and he is STILL not doing litter training and has gotten really aggressive about it. We even took him to the vet to make sure their was no physical issues with him so it's all just behavioral. We were attempting to push the litter training skills on him to the point where he wouldn't even want to be near us -- so I would suggest giving him some time with just you, one on one playing time until his hormones have time to subside. We did this with our bun and managed to not lose a bond with him despite his aggressive behavior. Bunnies have very different personalities but he HAS to be allowed time for his hormones to wear off. In the meantime, NEVER let them end any bonding time on a bad note. Even if it means just giving them treats close to each other at the end of the session but they will need to be rebonded. When they're babies it's much easier for them to bond together so getting that bond back shouldn't be too difficult. But give him time and then try it once he starts to calm down again.

If you continue to have a problem with his behavior -- try calling your local House Rabbit Society chapter and asking them for advice! Our vet is currently doing that for us to help with our little guys behavior issues! I am confident that your buns will be able to get back to normal after some hormones have time to go down. I worried myself crazy with my baby buns after their neuters/spays (1 female and 2 males) but it worked itself out in the end. Being so young helps immensely so don't let it worry you like crazy!

I really hope things turn around for you with Yoyo's behavior. I agree with Tanlover though, they are young enough where rebonding shouldn't be an issue at all. We have 2 netherlands dwarf brothers too that are bonded and we had to rebond them after a major fight that happened before getting them fixed, it didn't take us more than a couple weeks after the hormones settled down and they did part of the work themselves. It's was kind of like the mean one admitting he was a jerk and apologizing! They're now 2 and a half years old and the only issues we have is random humping and that's few and far between.

And you can't let it worry you either like Tanlover says, just be patient and lovey, he'll come around.

thank you guys I guess only time will tell!