The comment in the Kent case around the alleged comment to him from the copper is the entire key part of this case.
The reality of the situation is that once arrested, you're cautioned not to say anything as it will be used as evidence, and obviously he didn't, which is generally the smart move (if you're guilty of something), as they have nothing they can use as evidence later.
But, if there is more to a matter like this, and you don't submit to an interview, then you're forced to go through the entire court process, as the Police and the DPP just run with the Prima Facie case they have...
You then go through the entire process of whatever months it takes, but you're working in funeral parlours for a living until it is sorted out.
In reality, if he opens his mouth and tells his story at the time of arrest, Gordan Tallis unlikely never becomes a host of NRL 360...But there is a gamble that the police/DPP just ignore the statement and carry on.
It was always likely to end the way it has though.