Frost played 16 games this season after a delayed start due to a toe injury and brought up his 50th AFL game in round 14 against West Coast, but was omitted after round 20 and did not play the final three games.
His demotion was a surprise to many with his pace and athleticism giving the Demons strong rebound out of defence, but Frost accepted it was the right decision.
"It's probably still a bit raw the way the season ended and the way my season ended," Frost said.
"I knew I was out of form, and it was valid and fair, but the frustrating thing was my bad form and the few bad games in the seniors I wasn't able to turn it around in the VFL. A lot of players go through form slumps and its never always smooth sailing."