The person needs to speak to the lawyer who was representing him when he entered the guilty plea, first of all, to find out why the deal was changed, and why he wasn't told.  For a second opinion, you might want to look for another criminal defense lawyer in your area, perhaps at our website, http://attorneypages.comThere has to be more to this story than you were told.  In most courts, entering a guilty plea on a plea bargain isn't just a matter of paperwork.  The full details of the plea, usually, are read aloud into the record, and the defendant usually has to state, under oath, what he did, in enough detail to support all of the charges that he's pleading guilty to.  You should be able to get a transcript of the plea hearing, and any attempt to change the sentence or withdraw the plea is going to have to have that transcript as part of the record.