What event was that for? Would have been fun to see or participate.
That is some really extreme tire wear. Looks like they had lots of tread left too, that's too bad they got shredded like that! It would probably help for next time to have your tire pressure higher to keep it from rolling over onto the sidewall so much. Doesn't help being in a big car with a street alignment and a fair amount of body roll.
Oh well, you kept the shiny side up so that's a good day at the track.