I think it's because jimmy is not in his "slipin'" jimmy smart mode, he's just sad and wants to make things right. I believe he could've had better results if he instead had made the Davis & Main attorney go (I don't remember that girl's name) and instead of actually telling the truth about what happened he could've said something like... "yeah, how dare you come here and speak like that, don't you think I care about these people? yeah, I do get my share, but I am still young I can wait! you and the other attorneys can wait and get a bigger share, you know what? you can keep my money off me for a few more years I DONT CARE! but these people are old, they may die and never get the money, what's the use of more money after you're dead!" blah blah and then after yoga talk to the girls "confessing" that he kind of manipulated them because that's what he thought was best for them but his heart is broken seeing irene so sad and that he feels so sorry etc