Here's the report:

PACMAN HAMMER– (barrier 3) Broke gait during the score up and as a result was out of position at the start and took no competitive part in the event. Prior to the declaration of all clear, Stewards reviewed the start of the event with regards to the gelding breaking gait and also the circumstances regarding driver J McCarthy raising his right arm. Upon review, Mr McCarthy stated that his gelding, in his opinion, broke gait as a result of chasing the mobile barrier and as he was of the opinion that his gelding was not afforded a fair start and this being the reasons for the gelding breaking gait, he attempted to alert the starter. It was further established that there had not been any gear faults with PACKMAN HAMMER. Upon consideration, Stewards concluded that as PACMAN HAMMER left the pre-race formation, the mobile barrier was still stationary before proceeding forward. It was further established that the gelding broke gait free of any interference and free of any gear faults. Although acknowledging the comments of Mr McCarthy, Stewards did not find that the manner in which Mr McCarthy was approaching the mobile was an adequate reason establish the cause of the gelding breaking gait. Having formed this conclusion Stewards were of the view that PACKMAN HAMMER was afforded an opportunity to score-up and the gelding breaking gait was as a result of the geldings own tractability. As a result, PACKMAN HAMMER was declared a starter and the all-clear was subsequently given on the judge’s numbers. PACMAN HAMMER was issued with its last chance in the mobile barrier draw.

It was all the horse's fault that the punters did their dough.