yeah the hydraulic jacks with the handle bars usually have a point that sticks out on the side and i have been using that to pull it. put it in cuz it's skinny enough to go through the silencer and put the point behind the silencer and pull it'll come out. or YANK dont keep yanking one side though, rotate around.
make sure the exhuast is cold when you try it. Metal expands when its heated, so that could be your issue. also, try to lube up the area where its ast, like water or something, you make it glide over it, reducing the friction of the metal to metal surface.