[just another ref]

Last night I attended local varsity games as a spectator.
Boys game was great. Home team scored 39 points in the first 3 quarters and then scored 39 in the 4th quarter alone to come from 13 down and force overtime. On the tip to start overtime the visitors wound up with a breakaway.
Guard for the home team gave the shooter a little shove as he went up for the layup. Whistle, basket good, intentional foul. Home coach briefly questioned the call of intentional but I thought this was pretty obvious and apparently so did he so it was quickly dropped. Lane cleared, the shooter stepped to the line and was awarded...
3 free throws. A little buzz went through the crowd, I think, but nobody, including home coach, threw a fit like I thought someone would/should. Several people asked me, "How can this be?" I said, "It can't. They screwed up." Maybe I missed the signal. Did he call a foul and then a T? Nope, they inbounded the ball at the spot of the foul. I went to the locker room after the game and asked what the deal was. The explanation: You have to remember there was 1 shot for the foul on the made basket and 2 for the intentional. I nearly had an attack. I answered quickly, "Guys this is wrong." They were unconvinced, at first. I pushed the deal pointing out that the ONLY time 3 free throws are awarded for a single infraction are on an unsuccessful 3 point attempt. They wavered and one of the guys, obviously flustered, said, "Okay, thanks, I'll have to look that up." The other guy later said that he realized that we were right. These guys are from the same association that I am, I have partnered with both. Both of them have been officials for a long time. I have 2 questions. Am I the only one who is shocked that 2 veteran officials could make a mistake of this magnitude? (and not be called on it by the coach) Was I wrong to go into the locker room and ask them about it, and then push them on it? If I had done this, I would want somebody to tell me, the quicker, the better.