ecu code 61

nope didnt work. while i was under the car though i could feel a pretty good size exhaust leak just behind the cat. i dont know how much this could effect the stuttering or the ecu code but according to my sources a code 61 can also be an exhaust leak. soooooooo im gonna get the leak spot welded this weekend and if that doesnt fix it ill put the new o2 sensor in and then from there i guess its on to the timing. exhaust leak looks to be the obvious cause though.