SYDNEY, AUSTRALIA - SEPTEMBER 06: Lachie Whitfield watches on during a Greater Western Sydney Giants AFL training session at Sydney Olympic Park Sports Centre on September 6, 2016 in Sydney, Australia. (Photo by Mark Kolbe/Getty Images)

Former St Kilda coach Grant Thomas has sunk the boot into AFL boss Gillon McLachlan over his handling of the GWS/Lachie Whitfield drugs saga.

The Giants were yesterday charged by the league for conduct unbecoming or prejudicial to the interests of the AFL, in relation to Lachie Whitfield’s efforts to hide from drug testers back in 2015.

Thomas slammed McLachlan for brushing aside questions about the topic at his press conference yesterday, suggesting is hiding information that should be made public about the investigation.

“You are the administrator of our competition, owned by the fans, tell the people what’s going on,” Thomas said.

“Don’t hide behind the deals and the stuff you get on with your former AFL staffer, Dave Matthew, at GWS, it’s just pathetic.

“Just tell the truth, it doesn’t hurt – don’t pee down our back and tell us it’s raining.”

Thomas also criticised the journalists present for not pressing McLachlan harder on the matter.

“The journalists sitting in front of him, you can see the microphone shaking,” he said.

“He snapped back at them and as usual, they went back in their hole.

“Go back and ask the questions – that’s what you’re there for.”

GWS officials will meet with the AFL Commission on December 13 to appeal the charges.