Saw this right away as well. Check out some of the other $1.00 will pays with the winner, horse 7, who went of at 44/1 :

Horse Odds Will pay
#1 - 14/1 $574
#2 - 39/1 $131
#3 - 39/1 $998
#4 - 7/2 $164
#5 - 53/1 $285 got 2nd place
#8 - 76/1 $234
#10 - 9/2 $394
#11 - 9/1 $174 got 3rd
#14 - 11/1 $483 got 4th
#12 - Fav. 6/5 $109

The pool was $195,604.38. Not sure with a pool this size how large the wager needs to be to produce a large change in the payoff, but it seems as if the 1,3,10, &14 were the only ones not pounded at the window. For comparison the 12-4, and 12-10 favorite combos were only paying $11.