can i hire an atotnrey jus tto help me have an executor removed without being the offical atotrney of the estate

i have overhwhelming amount of evidence that the man who weazled his way as executor of my uncles estate right before my uncle died (despite my father holding the position for 20 years) commited fraud, unduly influence and has taken advantge since apponted. Our family attorney initially wanted to contest but then folded after seing how powerful this mans firm was. it was easier to make a deal, allowing this man along with my father to be co executors together. But thats where the Hell began. Nothing is resolved ever allowing both partys lawyers continue to argue and charge the estate. Im sick of it. The judge never got to see the evidence about this man. I cant imagine the law would allow such a known crook to be in the position he is.. this is for Manhatten (New York County)