Russell pointed out that, due to the strict terms of a policy between the SA and the Australian Sports Anti-Doping Authority, SA was unable to publicize Jack's positive test until the swimmer or ASADA decided to do it.
Russell said she was unable to provide further details on Jack's positive test, including the substance in question.
"I mean that while an Australian athlete who returns an adverse result is both bitterly disappointing and embarrassing for our team, our sport and our country, it does not in any way change the zero-tolerance vision that Swimming Australia has, and our continue to fight for a clean sport, "Russell said.
Russell said he accepted that the policy could legitimately be considered frustrating, but that Jack intended to reveal his positive test after his teammates competed at the world championships.
"We must not speak publicly … we have very strict confidentiality agreements," Russell said.
"I think it is a conversation we would be interested in having (changing the policy) at a later stage. In particular, I think it is very difficult for national sports organizations to be transparent."
Russell also mentioned several times that Jack was entitled to a trial.
Russell rejected the suggestion that Horton was left "in the face" after his public stance against drugs in sports on the podium last week.
"No, I think Mack has taken a position on something he really believes in, and I think we actually have the same position, we absolutely don't want drugs in our sport," Russell said.
"We are in a very difficult position where we are unable to inform our team, inform anyone else about the details of this issue. So we were unable to let our team know at any stage until we were able to tell him yesterday. "
When asked specifically why Horton did not avoid teammate Thomas Fraser-Holmes, who was suspended for 12 months after losing three drug tests – Russell said it was a question for Horton.
Russell said that Jack was well supported by his family and will continue to receive support from the SA.
Russell also stated that the timing on Jack's sample B could still be months, according to ASADA.
Wondering if the governing body had considered Jack's encouragement to speak earlier given the position in which he had left them, Russell said, "It is not really our call for us to advise Shayna on this, which is really a question for your lawyer and you team. "
Daniel is an Age sports journalist