From the website:
The sport section of the 25th March, 2007 edition of the Sunday Herald Sun contained photos from the previous day's racing at Caulfield. The photos show the horses in each race at the 400m mark and at the finish line.
A racegoer managed to strategically place himself in the finishing photos from races 2 to 6. His gestures spelling out YMCA (with a full stop).
and, the orange 'shirt' is probably a jacket.
The Angel-over-the-pope picture was more convincing.