Predetory Loans

[Dave W.]

We're in a "pick-a-payment" adjustable loan, & we suspect it may be a predatory loan. We recently saw a gentleman interviewed on the news talking about predatory loans, & said that 100% of the loans they've evaluated that originated in a certain time period ('02-'06?) have been determined to be "predatory". Here's a link to his website: http://voidmymortgage.com/victim.html.
He charges $400 to evaluate a loan to determine if it is predatory. He says that if it is, you have legal leverage to go back to the bank & have them adjust the loan. My question(s) would be: if our loan is determined to be predatory, what would the bank legally have to do? If the loan was originally with one company, but then sold to another, would the new bank have the same responsibilities? Is there a simple way to determine if our loan is predatory (some equation or something) w/o paying $400 or hiring an attorney?

(excuse the misspelling of "predatory" in the subject line--it won't let me edit that now that I've posted this topic)