Dog Afraid to Pee Outside After Being Shocked?

I have a male Malamute/wolf mix and a male red/white Siberian Husky, a little over a year and slightly under a year in age. Well, as many know these dogs are famous for digging. After escaping and scaring everyone to death, I set up a hot hire along the bottom of the fence line. The issue is both dogs wanted to mark this new thing in their yard, so both peed on the fence multiple times, and have been shocked multiple times. The Malamute/wolf learned easily enough to pee elsewhere, meanwhile my Husky now will not pee in the back yard. He has been going to the backdoor where he knows we will let him out, and instead urinating in the kitchen area right by the door. Often times he holds it so long that he starts to dribble when he is playing.

I have unplugged the hot wire, though it is still up (which was always my intention), and my Husky has made progress. He for the first day wouldn't even leave the porch area outside, but still refuses to urinate out there. It's been two or three weeks now of daily accidents for my Husky.

It's getting very frustrating, he is such a good boy, I don't know what else to do. I let him out front a few times a day where he will urinate, but I have been trying to encourage him to go back to his usual routine outside as my front yard is not fenced a he has to be let out on the leash. This is fine when I'm home, though my fiance has a hard time controlling him at his first excitement of exiting the house, and needs to be able to let him out back.

I have walked him around the backyard on leash, he doesn't fight it as much as he did the first couple days. I have lured him around with treats, up to the fence line and all around the yard. I praise him even if I get just the smallest marking outside. I have not been the most consistent to this point, as I was hoping his fear would subside. But it's not looking like it. Any suggestions dog owners?