On 19 September 2006, Primmer was involved in a race fall at Warrnambool. Primmer fell from galloper Hyped when rounding the home turn at Warrnambool and suffered head injuries and neck fractures. After the fall Primmer was not breathing and was revived on the track before being taken to South West Healthcare and then flown to The Alfred Hospital, Melbourne in an induced coma. Brain scans taken in the hospital revealed that things were not looking very good. A decision was made to turn off his life support. Amazingly, he continued to breathe on his own since then, and started to show signs of recovery. He half opened his left eye and clenched his fist. He was in intensive care at The Alfred Hospital, Melbourne, for several weeks before been transferred to the Epworth Rehabilitation Centre. Brenton has been gaining more movement and has been able to feed himself. On 14 November 2006, Brenton said his first words since the fall. He spoke to his father Mark over the phone. He said This came just after Mark had trained Makiato to a win at Hamilton. Mark said that Brenton had helped him choose the horse.
On September 12, 2008 Brenton celebrated his 19th birthday. With the help of professional coaching, Primmer has learnt to speak and now helps his dad train a small string of horses at Wangoom, near Warrnambool.