"It was a weird little thing. To be honest it looked like I was in a calendar shoot for RM Williams," he began, setting the scene.
"I was down the paddock mate with my Akubra on, my flannos, just slamming away on a star picket with a huge sledgehammer and twang - away it went."
"He's got a bulging disc," said his wife Chezzi, who rushed him to hospital after the tree-planting incident. "[The disc] is quite low down, so the problem is when he moves from standing to sitting. He can't get comfortable."
As a result, Grant said he's unable to stand long enough to fulfill his Dancing duties.
Get well soon, Grant!