Kirk was referred directly to the tribunal after colliding with field umpire Mathew James during the second quarter of last weekend’s clash against Hawthorn.
He was fined $1950 and received 93.75 demerit points after pleading guilty to the charge.
Roos said Kirk was “obviously disappointed” with the incident, but he had refocused his energies on Saturday’s game against the Brisbane Lions.
“He’s pretty resilient as we all know. He’s one of the most resilient players that I’ve coached,” Roos said before training at the SCG on Thursday night.
“Kirky’s a fairly honest sort of a guy and will generally admit when he believes he’s done something significantly wrong. That’s probably the main thing with Kirky.
“He was certainly struggling Tuesday and Wednesday, but we’ve addressed it with him and he’s moved on now and he’ll be positive heading into the weekend’s game.”
Roos said the club had received clarification from the AFL on Wednesday about the rules regarding contact with an umpire, but some queries remained.
“There’s a two-metre zone that represents an that are that if you do go in and hit the umpire, it goes from negligent to reckless, so we found that out, which I didn’t know about,” he said.
“At least we’re a little bit clearer on why he was cited as opposed to just fined. There are some things we need to address and we’ll go through the appropriate channels to do that.”