Assuming the security man's motive was genuine concern for flight safety, he could easily have told the captain about his suspicions and warned him he'd report him if he went airside.
In that case one may assume that the Captains drinking pattern maybe repeated a next time. It appears that he was sure he was under the limit because of the 12 hours and he will think that again the next time.
If a car driver is stopped by the police during an alcohol traffic control and he is over the limit, he will be charged accordingly and rightly so. With all due respect, Heliport, will you say the same for this case?