Well, child support is not a well for your both to draw from. Child support is there to ensure that there is an equitable split of costs associated with the upbringing of the kids and they have at least a somewhat similar lifestyle in both households. The money he pays you is not for him to "dip into" when the kids are at his house.
His behavior is inappropriate and damaging to the kids. You should log all of these incidents and you should draft a letter, via your attorney, that if he does not cease, you will have no choice but to file for full custody. It appears he won't listen to the court, but perhaps you should take him back.
Good luck with this.


