RTO, I presume in your training you are not at gross in old light twins, if you had it at gross with a aft COG and get to much Angle of Bank into the dead engine you may have "fun" getting it out. Not to pretty if kind of close enough to the ground as not being able to close both thotalls to get out of it. There will be some negitive engery turning into the live donk, but at least you will be incontrol and wont end up on your back or pulling power to get the wings level. I too didn't think much of it either, untill you have a go at that. cheers.