As I understand it, they had to tweak the circuits to remove the codepaths that they knew the input wouldn't hit because otherwise it wouldn't have worked. So..

As I understand it, they had to tweak the circuits to remove the codepaths that they knew the input wouldn't hit because otherwise it wouldn't have worked. So... no, Shor's algorithm has not been demonstrated in practice. What's been demonstrated is a similar algorithm that requires you already knowing the factorization of the number you're trying to factor.