Maybe since 2005? He was an Australia team coach and lost his contract, along with 17 other coaches, when the current administration took over in that country. However a former Aussie, Matt Favier, who became a southern counties coach in England, I believe had an influence in getting Khmel a job in the British system where he appears to have flourished and won respect.
He was the guy who took Matt Shirvington from an 11.1 boy to 10.03. He also coached Clinton Hill, John Steffensen, Daniel Batman and Pat Dwyer (and helped with another guy) onto the 6-man 4x400 squad who won 2004 Olympic silver. And the Aussies rewarded his effort by axing him, along with Cathy Freeman’s coach Peter Fortune and a lot of others, including head coach Keith Connor. No further comment required here really. It’s just stunning stupidity.