He is most famous for an horrific career-ending broken leg in a Premiership match on April 8, 1996 for Coventry, against Manchester United. Two minutes into the match, Busst collided with United players Denis Irwin and Brian McClair, resulting in extensive fractures to both the tibia and fibula of his right leg. The match had to be delayed for 15 minutes while the blood was cleaned off the pitch. It is reputed that Manchester United´s goalkeeper Peter Schmeichel vomited on the pitch upon seeing the injury and had to have counselling afterwards.
Busst´s injuries were so bad that he at one point ran the risk of having his leg amputated. Despite having 26 operations, Busst never played again and retired in 1998. Since his retirement, he has worked for Coventry´s backroom staff, working for their ´Football in the Community´ programme, of which he is now director. In the meantime, he has also trained as a coach, earning several UEFA coaching badges. He is also manager of non-league Evesham United F.C.