Being in Arizona myself, I can tell you that Arizona has a VERY strong father's rights group. Contrary to popular belief, he absolutely can represent himself AND WIN. If I were him, the first thing I would do, is insist on following the EXISTING order. The reason being, that it is the ONLY enforceable thing that he has. If they haven't filed a stipulation to change the order, then the order as originally written is what is enforceable. Secondly, if I were him, I would document each and every violation of the order, and file contempt of court charges accordingly.
It has been my experience, that the more documentation you have, the better off you are. Document the issues with the child's scholastics. If your boyfriend has joint legal and joint physical custody, his ex absolutely does NOT have the right to ignore the visitation order.