I'm not a vet and I don't want to give any advice going against a vet - BUT....in my experience any further soaking slows or prevents healing. I find their skin and tissue needs air and to be able to dry to heal. I also never give antibiotics only because I find they heal just fine on their own. I once sewed up a rooster, that a dog had gotten ahold of, from the insides out, muscles everything. I even used the nondissolving plastic sutures on his inside muscles to hold his leg together. Sewed up the outside once I got him pieced together inside. Family thought I was nuts and wanted to know why I was working so hard to save a rooster and why not just process him? Well we can't bring ourselves to even process the Cornish crosses we bought. They were supposed to be done at 8 weeks and will probably see their 8 year birthdays. They are fat and happy and several months old and running around our farm.
But I digress - back to the rooster. Got him all sewed up, applied the wound powder, kept him in a kennel for a couple of days, turned him loose - today he's a beautiful rooster running around our farm and you would never know he had literally been torn limb from limb. No antibiotics no resoaking - just clean the wounds with peroxied and betadine water, stitch, apply Neosporin - no wrap on any wound except bumble foot and only wrap that because they have to walk on it - apply the dry wound powder - done. That's my procedure on every injured bird and trust me - I've sewn up dozens and dozens. I've never retreated or rewashed a wound and I've never had one develop any problems or not heal immediately.
Again, just sharing my own personal experience. Chickens are not like people or even other animals and their wounds abcess differently, need to be treated differently, and heal differently.
p.s. My favorite healing powder was the spray on Furall - yellow spray-on that dried like a powder and was an antibacterial and anti-fly. I've been told it was taken off the market but if you can find it online you should buy a can or two - worked wonders.
Edited to add: Here's a link to a page in my crop surgery thread (yes, I've done that surgery more than once also). This page shows a hen that was badly torn open and how I stitched her up and she healed perfectly fine.
https://www.backyardchickens.com/forum/viewtopic.php?id=229796&p=2
They are amazing creatures.
