Two weeks of no training may have set Barley back a bit but you can quickly reverse that. Just go back to basics, he will remember pretty quickly. (Labs are really very smart and they live to please you!) Your emotional state may be affecting the dogs, they are sensitive and pick up on more than some give them credit for. Obviously you are going through a tough time and there isn't much you can do to control that. Just make sure to keep regular routines like play, walks, feeding, walks and training so the dogs feel secure.
If you have had 2 appraisers out to value your home what makes your husband think it can be sold for more than what an expert thinks? Putting it on the market may prove to him the experts were right and it may not. If you do have to move, the dogs will be fine. As long as they have their person and routine they adjust pretty quickly. At this point, let that be the least of your worries. I know moving and leaving your home is stressful but you are keeping the dogs together with you and that is a major victory. Hang in there!