I have some pretty good video editing software on my PC, so I downloaded the BTN video of the game, opened it with the video editor, and had a good look at the last moment disallowed goal, with the audio wave also visible on the screen.
For both the audio wave and the clock on the BTN scoreboard "bug", the puck is past Minotti's arm while the clock still says 00.1, but maybe not full across the goal line; and then clearly across the line two video frames later - video 30 frames per second - but the BTN clock has gone to zeros during those two frames. The problem, of course, is that neither the BTN clock nor the horn is official. But it had to have been oh, so very close!