First thought: Is it a good idea to send a cheater to live with a new "spouse"?
Second thought: These people are just on a 2 week vacation with their new "spouse". Of course it's going to be better than real life where you have work, family, bills, etc. to deal with. Maybe if they went on a 2 week vacation and totally unplugged with their own spouse, the results would be even better because they would be working on their common goal.
This is a messed up way to do couples' therapy, but that doesn't mean I'm not going to watch.