LOL yet again I'm up! Patron Saint of lost causes??
First if you want to say "screw it to much dog for me" and give him back, there is no shame in that! It sounds like you did as much research on WL GSD's as I did ... which was uh ... none! For me my first WL GSD was just a big furry dog with a pointy face (Boxer Guy) Me and my guy (Rocky OS WL GSD) had a very bumpy road together! But ... we got'er done and I have absolutely "Zero" regrets today!
So "if" you want to keep him ... you just need a plan. I think I can help you out?? If the pup is able to run at your husband and jump all over him and stuff?? Well that's where we need to start. Outside is for "Play" inside is to chill. I don't know if this puppy is Crate trained, if he is not he needs to be! The Crate is not only about keeping dogs out of trouble or out of your hair (as it should not be punishment) it is about rules limits and discipline! So step ... one Crate train the puppy, looks like this:
https://www.youtube.com/watch?v=0ihx_tUyG40
https://www.youtube.com/watch?v=n7lyzbgTXjU
https://www.youtube.com/watch?v=mn5HTiryZN8
The first one is puppys the others are dogs but those are the "principles" involved. I'am going somewhere here so bear with me.
The goal is going to be ultimately "No Free Roaming in the home!" Ultimately the reason the little guy is free to run amok on your husband is because well he's free to run run amuck! It needs to stop! No more free roaming in the home! Lock down time, usually reserved for dogs with issues but your pup is over the top! So might as well start now!
Indoors ... the puppy should be in his "Crate" or in "Place" period end of story, No free roaming in the home! That means no bed or furniture privileges ... those are rights that need to be earned. Training "Place" can be found here and there are clips for training "Puppies in Place" by Bethany ... I'll get back to her in a bit.
So what you need so far is Crate Training, Train Place and No free Roaming in the home. Usually by and large "Big Dawg" stuff but since he is acting like a big "Dawg" already you should train him like one.
All that being said here is ... "The Place Command" :
Fearful, Anxious or Flat Crazy "The Place CommanD - Boxer Forum : Boxer Breed Dog Forums
And you will find a clip by "Bethany" on training puppies in "Place" in there.
So if you start to work on those you will have no need to "correct" the puppy for bad behaviour but ... right now you do and it seems that is kinda sorta of a problem. Puppy is kinda out of control. Corrections being to harsh by you?? Are a concern and none at all by your better half, as he is getting chomped on!
If you want that to stop "right freaking now" as am I want to say, use a tool to take "you" out of the picture as regards "corrections."
The "Pet Convincer" is made for people that have "issues with proper corrections" details are here:
Pet Convincer.com
Clip pretty much explains it, I'll add it's a bicycle pump so you can get one at Bicycle Shop for around $16.00.
A heads up, aim it at the dog's shoulder not his face and preferably don't let the Dog/Puppy see it. Don't make a big dog deal out of it ... you say "No" or "Place" once trained. And if the "puppy" ignores ... deploy the tool! A tip from a member on BoxerForum, she only needed it once or maybe twice?? If she does the "Psst" sound "now" it has the same effect as using the tool ... the dog stops whatever it was doing cold!.
And WL dog and all yeah I'd be extremely cautious of the treating people like you had a lab approach. A much better approach in my view would be the first link here. "Who Pets my Puppy or Dog":
http://www.germanshepherds.com/forum/5296377-post8.html
For me as it turns out that is always what I did with my dogs anyway, the only difference was with my "Bully's" if asked to Pet I would always say yes "Please Do" Boxer's luv'd people! With "my" OS WL GSD the answer became "NO" he was clearly not a fan of people!
He made it pretty clear early on with guest in the home for the first time ... he was not a fan. In anycase I showed him how I "expected him to behave." I stepped in front of him to keep people out of his face. He learned that people were no big deal ... worked out fine.
If your "expecting him to be crazy in luv with people?? That might not work out to well?? If you make adjustments in your expectations of the people thing with this dog ... then no problem.
And finally for "Puppy" specific stuff ... here you go:
https://www.youtube.com/user/DogerciseLA/playlists
Top row all the way to the right "Puppy" specific stuff by "Bethany." Only you can decide what's best for you but if all you needed was a plan ... well now you have one. Good luck, Welcome Aboard and ask questions.