why not. My dogs always remember their previous vet visits and start quivering before we even get through the office door. An abused dog doesn't recover it's fear over night, or if ever, because they must remember being abused. I would take the dog over there a few or more times so they dont just feel dumped and abandoned. Leave with the dog an unwashed sweater or sweatshirt or any article of clothing of the person he is most close to so he can smell your scent. Take his toys and blankies and bowls so he has familiar things with him and try and have the sitters keep as close to his schedule for walkies and such as if he was home. Of course they will pine, they have feelings too and miss us as we would miss them.
Mikala