This is NOT the way to prove that you are a fit and proper person to have custody ~ even for a day or weekend ~ of a child.
No court will now listen to him as he has proved he is a selfish arse and will now also have a criminal record.
The way to gain access to your children, if your ex wife/partner is being difficult, is through the family courts who will listen with sympathy to any application. Playing into your ex's hands by giving her lawyers this sort of ammunition to use against you is pointless.
For what it is worth my own opinion is that anyone who really cared for his kids would not pull a stunt like this as the child will see it and, if it doesn't scare the sh*t out of them, it will only reinforce all that Mummy has been telling them about you. It is all about "Look at me, see how much I care" when in fact all he cares about is himself.
As JOM says they should simply shoot the tit down and let the rest of us get on with our lives.