Well, if his employment situation is shaky and he misled you about that (or was even just misled himself) he's going to have to realize that plans change when real life conditions intrude. You may need to take one of those jobs if it's financially needed and he's going to have to deal.

Easier said than done, I know, but you really don't want to find yourself jobles and homeless in a strange town because he's too proud to deal with the fact that he miscalculated.

My guess is that the RE stuff is tested for on a regular basis, every few months. Taking a job doesn't mean you have to be there forever, but you do have to pay bills regardless. He may still need to go to the next project for awhile, because you go broke fast with NO job, but it sounds like he needs to prioritize finding a different job.

That's not easy after busting your ass all day working construction, but he really needs to accept the idea of you changing your plans for awhile. Best of luck in convincing him that it may be necessary to do so.