David I have no reason to disagree with you but if you take a look at the lap details for lap 5 and six you will see that the same riders were behind Bud at the start of both laps, they were also the last three riders to finish lap six. If Bud was red flaged at the start of lap 6 along with the two other riders behind him, then they should have been Black flagged, is that not the rules, or a mater of safety. These three riders were alowed to complete the last lap but only one disqualified.
Yes I would agree break the rules and be punished, but punish all that broke them.

Just a thought, If the riders had passed a red flag at the Bray Hill Crossroads at the start of lap six, what happened to the rest of the red flags on the track, were they not out, I cant believe that riders would race the last lap if the red flags were out, something is not right.