Startled horse Impulse Buy crashes through fences at Flemington, sending patrons sprawling Racehorse Impulse Buy crashed through several mounting yard fences at Flemington. Picture: Simon Buckley Source: Twitter A DRAMATIC incident could have been disastrous at Flemington today, with a startled horse crashing through three fences before galloping through the members lawn. Impulse Buy took fright as it left the mounting yard for the fourth race, tossing jockey Kayla Nisbet before crashing through the public lawn fence. It then attempted a clumsy leap over the mounting yard fence, flattening it. A newspaper photographer jumped clear, avoiding a potentially disastrous collision. Impulse Buy sent patrons sprawling in the mounting yard, slammed into another horse, then crashed through another fence before charging through the member's lawn. Members in suits gave chase before trainer Jason Warren grasped the horse's reins. Impulse Buy - pictured after winning last month - took fright in the Flemington mounting yard. Racing Victoria chairman Rob Roulston said it was lucky no-one was hurt. "Imagine if it had been Derby Day?"" he said. Warren said the horse's saddle had slipped over its behind. It's a similar affect to flank ropes at the rodeos. All they want to do is buck,"" he said. "I was just returning from the stripping sheds and saw this horse galloping towards me."" Impulse Buy was not believed to be seriously hurt. The fences were destroyed in the rampage.