This is a shit situation to be in, but honestly until you have something lined up I wouldn't recommend doing anything just yet as you don't want to compromise your only source of income. Document everything but keep quiet and focus on the other issue which is that you need another job.

> The market where I live is bad this year.

In that case you might need to consider relocation - staying in a market that bad (no offer in a year of job hunting is crazy) would be a huge risk/liability anyway - imagine if you lost your next job. As shitty as this situation is, at least you are given the opportunity to look for a job on your own terms and not just suddenly shown the door.

Once you're out (and only then) you can look into getting back at them - talk to a lawyer and give them the documentation.