Yarran started the game as the Blues' substitute and had little impact when he entered the fray in the final term.
Blues coach Mick Malthouse said Yarran was remorseful about his poor body language, but the coach couldn't guarantee that the forward would be selected for the clash with Hawthorn at Etihad Stadium on Friday night.
Malthouse said his star had "clearly" been affected by being named as the Blues' sub.
"He admits that it wasn't good, and I don't think it was good," Malthouse said at Visy Park on Tuesday morning.
"How we handle that is for an internal voice and action, so we'll see how that pans out.
"He clearly didn’t have the right body language. We all know that; it's no use hiding that. He is the first to admit it.
"He is very remorseful about being in a position where he hasn’t taken on board the team theme. And he fully acknowledges it.
"He will be far better for this. The club will be far better for this. It's a learning curve for all."
Asked whether Yarran could be dropped, Malthouse said: "There's a chance the side could be changed considerably. We lost a game that we shouldn’t have.
"It's not a matter of having vendettas. When people make mistakes, do you punish them twice? No. So our side will be picked with one thing in mind: to have the best side available out there to beat Hawthorn."
The coach believes Garlett might have been a victim of his quiet nature.
"If the pre-requisite is to bellyache, scream, yell and carry on… I'll have our blokes do it every time," he said. "It's a disgrace if that's the case. An absolute and utter disgrace.
"Jeff Garlett, you can jump all over his feet and he'll be the last to complain; he won’t say anything.
"If the prerequisite (for a review) is for someone to bellyache, the whole rule should be thrown out and forget it, (and) take the goal umpire at what he thought was the right decision.
"Otherwise, what are they doing in the box upstairs? They have direct access to the umpires. If you've got direct access, halt the play, do something about it, be proactive."
The Blues are yet to make a decision on the fitness of joint vice-captain Andrew Carrazzo.
Malthouse said he has trained for 10 days and in a session on Tuesday morning "did all the things we wanted him to do". Carrazzo's fitness will be determined on Thursday.
Ruckman Robert Warnock has overcome a knee problem and will be available for selection after training strongly.
Ben Collins is a reporter for AFL Media. Follow him on Twitter: @AFL_BenCollins
