Heat it up get a greaker bar. Put the right size socket on it (a good one) so you dont break it or strip the thread from being the wrong size. Now put on the breaker bar, slip over another bar, tube, to get more leverage. A longer one, now pending on which wheel it is if its the left wheel (standing behind the trike looking forward) you would pull the bar torwards the bike with the bar up in the air. Now for the right side you would pull the bar away from the back of the trike. Angle it just about level and jump on it it should snap loose.