Dajka was sent home from the 2004 pre-Olympic training camp, accused of having lied to the enquiries into the Mark French doping affair. His appeal at his expulsion and later suspension was unsuccessful.[3] After this, he became disillusioned and became a very heavy drinker, and gained a lot of weight. Following a tribunal on 15 June 2005, he received a three-year ban following an assault on Martin Barras, the Australian national track coach. He also vandalised his parents' home and was put under a restraining order. After suffering emotional and mental problems, Dajka had a brief stay in an Adelaide hospital suffering depression and alcohol-related stress.[4] Dajka's racing licence was reinstated on 22 December 2006; his ban was lifted early in accordance with conditions set out in the 2005 tribunal- that he sought immediate medical treatment and completed 80 hours of community service.[5]
Dajka later regained his normal health and stopped drinking, and there was talk of a comeback. However, Dajka was found dead in his home by police on 7 April 2009. The cause of his death is unknown, but police said the death is not believed to be suspicious.[6][7]
