It's hard to follow.
Someone made a complaint about him which was not criminal in nature.
So, as far as I can make out, there is no accusation of criminality against Brian Stanley.
Then there was a counter-complaint which was potentially criminal in nature.
But the Preliminary report is reported to have said that Stanley is guilty of gross misbehaviour.
So they referred it to the Gardai out of "an abundance of caution"
I presume that within all political parties, there is misbehaviour and complaints made to the party H.Q. Most would not be referred to the Gardai as most misbehaviour is not criminal.