PNP unless the game is stopped while the decision is made the game is changed. As I said if a goal is scored during your 30 seconds more problems. But I think I have misunderstood you, are you saying the game is stopped?
The goal line decision could have been made very quickly with goal line technology (to which I have no objection) but other in field decisions (which is what I am talking about) are a different matter.
No, you were right the first time, Spurf.
Carry on the game and go back if an incorrect decision was given.
If someone scores in the time that's being played, then you could either scrub the goal or play an advantage and allow it, depending on who the original decision favoured.
If a team commits a foul and then goes on to score as the decision's being checked, then it's perfectly reasonable to chalk their goal off, in my opinion.
These things should only be used in limited circumstances, though.
They don't need to be implemented for every foul.