When we got our LGD (a Sarplaninac, but sorta the same temperament as all LGDs) he acted like he absolutely hated me. He was 6mo already -- huge -- and hadn't been socialized at all. We actually got him free because his owners weren't quite sure what else to do with him, as they already had all the guardians they could handle. They considered putting him down, because he was so...ill mannered?
Anyway, I figured out that he didn't hate me at all...he was actually terrified of me, and all good LGDs translate terror to pure, unadulterated aggression. In the dog training world, that trait is called "fear aggression" and it's usually considered very, very bad news...
Not in an LGD, though, obviously...they need fear aggression to do their job!!
Once I figured it out, what I did was basically torment the dog across a fence for a couple of days. That sounds horrible, but I really did just taunt him incessantly across that fence so that he'd come to realize that no matter how much he growled or how fierce he looked, he couldn't back me off. After about two days, he gave up on trying to turn me around and would shy away from the fence whenever I came over.
At that point, I went inside fence and made a bee-line right at him. He started barking, but I just kept on walking...he turned tail and ran! From that point, for the next few days, I ran him all over the barnyard just to prove the point.
Once he learned to get away from me on his own, I stopped running him around.
Within a few days, I'd catch him close to me and I'd put my hands on him...he'd go stiff as a board, thinking I was going to tear his head off.
Instead, I praised him and scratched his head. He learned pretty quickly that I was to be respected, but not feared, and most importantly.......THAT I BROUGHT HIM FOOD!
We're fast friends now, and have been since. I know it sounds like it took FOREVER to get there, but the whole process was over with in probably...I dunno, 10 days, max? At this point, I can't imagine being without big Ivan watching over the goats (and, soon, the chickens too).
Shame your husband couldn't have learned how to stand the dog down, instead of puffing up and standing down himself.
( <-- read that, bok bok bok BIG CHICKEN.....
Too bad we don't have a 'pink panties' emoticon.
)