BTW, even though it might be tempting, DO NOT "have a little fun" with the company's website now that you no longer work there.
Not only could that get you into a lot of trouble all by itself, but it would absolutely ruin any chance you have of winning a legitimate case against this company.
In case you did not know, attorneys generally specialize in particular types of cases -- e.g., family law, workman's comp, trust, corporate, etc.
You want a lawyer whose specialty is cases having to do with employee/employer disputes and who will act as an advocate for the employee, as different from a lawyer who acts as an advocate for the employer.
There are different types of claims that one might bring against an employer, such as wrongful dismissal, discrimination, violations of labor regulations, etc.
Upon hearing your story, any lawyer could probably tell you if you have enough grounds to pursue the matter, and then refer you to one who specializes in the types of claims you might bring -- this is why I said if you don't know anyone else, call a TV lawyer, because they could refer you.
An attorney's prior experience with the Church of Scientology and its Office of Special Affairs (OSA) could be useful but I wouldn't think essential since you would be bringing a claim against the consulting firm that employed, "trained" and then fired you, not the Church of Scientology.
Remember that like everyone else in the world, attorneys compete for business, and that the attorney works for you. Make sure you are satisfied with his/her credentials and support of your case before you give anyone any money.
If there is a good chance to win significant $, the attorney may take the case without any payment up front -- they get paid a percentage of whatever they win for you, after they win it.
An attorney's willingness to take a case on this arrangement is a very good thing because it means they believe they can win, and they are "hungry" to win and will put lots of effort into it.
Being fired from a job, no matter what the reason, is almost always a blow to one's confidence -- even when you know in your heart that you didn't deserve it. Many people are very intimidated by events such as you experienced; employers know that, and count on the fact that people often do nothing.
I hope you will at least talk with a professional who can advise you; actually I hope you find a lawyer who will sue them for all they are worth on your behalf, and win, so that they and others like them are put out of the business of intimidating people.
Good luck, and please keep us posted!