I could have sworn, if it was either Brad or the lady who mentioned it took weeks ( not the exact amount) to get to that point. But last night that episode, gave me tremendous hope.
You see, the Bosco behaviour with all the other dogs is Oreo! At home he is not a barker, but tries when the door bell goes off and new people are walking in the door. I honestly believe its fear based when he is on leash around other dogs, but I have never tried off leash. Well, when he has gone to the groomers, they have dogs off leash waiting their turn, Oreo will come in all gruffly on leash. They take it off, and he is free, he is quiet but you could see scared. He doesn't like being "sniffed", but wants to sniff others.... Silly guy

When I come back to pick him up, he is happy and he has always made a friend or two.

I even babysat another dog for a week, and after his initial alarm barks, he was fine, so there is hope.

This episode with Bosco has made me really optimistic.