You assume using network to solve the eval problem should be viewed as a security violation. From the perspective of the response team who let it continue, this was just a poorly written eval problem, where the solution unexpectedly involved some network hacking (not unreasonable given it's a cyber security eval).
I don't think your assessment that the response team did something wrong is fair, unless you have seen unreleased documentation about what sensitive resources were within the impact radius.
I don't think your assessment that the response team did something wrong is fair, unless you have seen unreleased documentation about what sensitive resources were within the impact radius.