I'm not an NJ lawyer but here in FL there are "special" driver licenses required for limo drivers (we call them "CDL's" - or commercial driver licenses), and Judges over here tend to treat CDL driver's a little more harshly than they do "average" driver licensees.
That said, if you (or your pops) are not happy with the services provided by the ticket lawyer then get another one. Again, I cannot speak to NJ per se, but here, in FL, and especially in Miami where I primarily practice, "ticket lawyers" are a dime a dozen and they all, every one of them, offer a "money back guarantee" if points are assessed. You might want to look into that.
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Your dad can take this course here: http://www.newyorksafetycouncil.com/?lgr=f03107... to have 4 points taken off his NY abstract and a comparable NJ course to take points off of his NJ history.