Retalition aggression

You know, I'd wait until you were sure there WAS damage. After Penny nearly lost an eye to the dog she was living with, and on top of that was charged in completely unprovoked attacks by strange dogs a couple of times, she was a little nervous around other dogs for a couple of years, especially large dogs. But it was perhaps miraculously never a big issue and she got over it on her own after living with a couple of nice big dogs. She's as confident as ever, now.

By all means, ease him back into things. Take it easy, one dog at a time if it seems the right thing to do, but I reckon don't make it into a problem with your own tension and anxiety. I'd make sure he got some low-key interactions with really nice dogs that obey all the doggy rules, and I'd listen to him and let him tell me what he was ready for and what he wasn't. I reckon the important thing is don't think too hard about it and make yourself anxious. He'll pick up on that and it will reinforce any anxiety of his own. 

Great point !  He was snarky with the boys this afternoon, fine with the pup and his mom , I did not allow the rowdyier girls out as they could have made a possible headache much worse.  He laid at my side in the back yard near the fence the dog must have scaled using the red tip bush.  His eyes constantly watching that corner, rather than the 5 raccus kids screaming and playing water sports with a couple of adults about 40 feet away. When Zion , 15 months, came up to greet him on his re entry Kota bunched up, he held his posture in a most unfriendly way but I tried to push that off on just coming hme and possibly being hung over from pain meds and anesthesia.  Later Phelan 9 years , his litter brother and also an altered dog came up and again the demeanor went from trying to relax but watchful to a low warning growl.... tense and ready to launch.

All info and tips are appreciated and  I really value your input !! Thank you so much folks !!

Bonita of Bwana

You must allow him to heal before you make any decisions about what may or may not have happened to his psyche.  Right now he's vulnerable and feels it - not because of the attack but because of the injuries.  I wouldn't let him interact with the pack much, but then that's best for the healing process anyway. 

AFterwards, give him the benefit of the doubt.  Expect the best but be ready for the worst.  As he interacts with your other dogs, try not to stress out at every little thing.  Remind yourself not to stare tensely at him.  Instead, a helpful trick is to watch the dog he's with.  You'll see signs in the other dog that he's being pushy, or overly nervous, just as easily as you'd spot them with him.  And he will not feel pressured by your attention.

Good luck! It's a tough situation, but I assure you that the majority of the time, canine victims of dog attacks sustain no psychic damage, or very minimal (like an aversion to a small segment of the canine population).  I owned a dog for years, who was a bait dog confiscated during a dog fighting operation, bust.  Bubo loved every dog, and had the sweetest personality and was incredibly happy go lucky.  He did have the fault that he would "fence fight" other dogs if he could tempt them into it - but I've had a couple of dogs who've had nothing but good experiences growing up with other dogs, who also picked up that habit.  And even the fence aggression seemed more like a fun thing he did rather than something he did because he disliked the dog.  If the dog came through the fence, Bubo would go, "Hey, you look like a fun playmate!  Let's race!"  Like he'd never seen the dog in his life.