Koi
'Alcohol may still not be involved.'....Be odd if it's not, afterall there has to be some evidence for Police to arrest, unless of course they were looking for kiddie porn, or the pilot refused to pay a bribe...
If you don't like the idea of bus drivers calling police if he thinks a pilots been drinking, then don't drink before you fly. Although the 'Grunt with bus and attitude' has yet to be proven before a court, so the same rules apply to the driver as the pilot, innocent, unless a court says otherwise.
None of the crimes you mention other occupations committing are harmful to the extent that a pilot who's been drinking could be. However there are many other crimes those occupations could commit that could be. However this thread is about a pilot who has been arrested for attempting to fly having had too much to drink. If there was no evidence then he would not be bailed to return to a police station. The assumption is therefore there is some evidence, thereby justifying the bus drivers actions.
No the press wont print retractions if he is aquitted, but then if he is convicted ,most posters here will not be howling for his blood either.