In an emergency, the commander may take action he considers necessary to ensure the safety of the flight including breaking minimums, however he must be able to justify his actions and will get a grilling from the experts who have had days to analyse a decision he had to take in minutes whilst under considerable pressure.
Breaking minimums or continuing to land from an unstabilized approach may be the safest option in some situations, but expect to have to explain how you got into that predicament in the first place, ie why didn't you divert earlier whilst you still had the fuel ? Some pilots would go around with minimum fuel and weather closing in simply because they were slightly outside the stabilized criteria at 1000' with a 4000m runway in front of them.