I mange to remove it finally, I drilled just above the keyway than used my ozito ripp off dremel to cut a thin cut just above the keyway, used a cold chisel to crack it a little and used my pulley and the 6mm tapped holes i made to slip it off. Wow this thing was epic rusted on glad its off now.
Now here a question is there something i can put on the shaft to prevent this happening again?