spacepilot . the question is " did you have the integrity to tell him you were concerned and you were going to take it higher , therefore allowing him/her the option too get himself the help required? " , if you did this then thats ok . if you simply went ahead and "told" on him/her like a child then I would support the "storm" you experienced fully.
Unless I'm reading your post wrong, you seem to be suggesting that this should have been sorted out behind closed doors.
Okay, agreed that it may have been the decent thing to let the pilot know the incident would be reported to give him the opportunity to prepare his case but once the decision had been made to report it, it has to be reported, regardless of any other supplementary actions.
It is a very difficult call to make but nevertheless a call that had to be made.
Unless the report was made out of spite, which doesn't seem to be the case on the face of it, the hard call was probably a damn sight more responsible and adult than childish.
What if he hadn't reported it and the guy had flown another similar sortie later that same day, with fatal consequences, not just for the pilot but other observers or innocent parties on the ground? He'd have a lot more on his conscience than having to worry about whistle blowing.