In the final analysis, the offender will always plead that it was the airline, and not he, that decided to divert, therefore how could he be responsible? Seems galling, but it is an effective defence. I have been involved in a very nasty air rage incident. Once subjugated (cuffed), there was no further need to divert for the individual, and all that was needed was Police on arrival (SYD). It took them 25 minutes to come, and the eventual Court case simply resulted in a fine of about 900 Pounds only. It took extensive interviews of all the crew, several passengers, statements etc, and the Court simply did not take it seriously, It seems the official Australian attitude is 'boys will be boys- one stubby too many- what a laugh!'