Wow, I really don't need to comment on this one because you'all did a graet job on it. I agree with everyone so far.
If this ever happens for whatever reason, it is time for henka-waza. A great alternative would be this: When yous start to rotate underneath and uke spins out, maintain his arm extended while you slide behind uke for a traditonal figure 8 kokyunage. This works nicely and will remedy the situation!