Well just ignore it. Don't reward or praise it for sure.
No, it's not too late for the two week thing, you can cease training other than playing (on outside breaks) and leashing.
Yes you can try leashing dog to hubby. Perhaps in the yard for now.
We encourage leashing the dog to new person or people even if they didn't do the whole two week shut down.
The idea is to get it to the point where the dog isn't making decisions - while leashed or crated you're controlling his space, and that's a good thing.
The whole dog-owner interaction at this point should be, dog makes no decisions on his own - especially - ignoring your husband is a big decision for him.
So you take that process away. Don't give a command you can't follow up on, don't let hubby give a command he can't follow up on.
For instance, "come" or "sit". Those things aren't to be mentioned during this time.
That way the dog cannot fail.
Leashing the dog to you or hubby takes those choices away.
At the MOST, when the dog sits (on his own accord) catch him sitting and say "GOOD sit!!"
That's about it for training right now