If true he should be praised for coming forward. I had six immigration lawyers that were totally screwing things up. At some point when doing first time meetup of a new lawyer I wanted to hire, I embarrassed him knowing more about basic Immigration laws that he did!
Majority of lawyers really dont care. They run a caging operation. If you call their office and you are not client, you will speak with head of the food chain, many times owner himself. One you get signed in, bye bye! Thats usually last time you hear from him/her - from now on you dealing with assistants. And immigration laws not only change often, but the USCIS will not comply with their own laws on many occasion. I dealt with enough government on average to tell you Immigration is sort of different because they serve aliens that have less rights than US citizens. For example IRS will treat you more seriously because on average 99% of their “clients” are USC, capable of calling their representative and stirring the pot. Average USCIS “client” is usally less powerful foreign citizen with maybe $500 savings. I was lucky to immigrate with nice saving cushion and took USCIS all the way to BIA (Board of Immigration) and basically embarrassed the whole local USCIS office, where BIA wrote completely shredding response, pointing out USCIS abuse of authority, lack of professionalism, and outright rudeness. In fact, even though my lawyer screw up so bad that there was no choice than actually start all over (with less chances of approval since now I have this spoiled milk spilled all over my alien number), the BIA went out of their way and told local office you will do X,Y,Z and if no issues arise you will approve this file. Something that's typically unheard of. Dealing with USCIS for 12 years to the cost of close to $100,000 I probably should have wrote a book by now. But its much worse than you can imagine, I can tell you this much.
Bottom line: get yourself local lawyer, small office type lawyer, preferably that worked in gov before. Believe me or not, when it comes to USCIS, its all about who you know. My last screwup was trying to get an update on the file (typical stalling technique is for USCIS to neither approve you nor deny, so you are in limbo for as long as YOU have the guts, time, energy AND money to continue "harassing" them for what's your right per INA) for close to two years.. meanwhile I went to this lawyer that used to work for the immigration office himself, and during our 30 minute call, he already emailed his buddy at USCIS and got back the ANSWER other lawyers couldn't get for years (!!).