Texas Child Support Question on Recalculation

My ex husband was originally ordered to pay support for 2 kids based on 5k a month by the AG from tax returns. About 7 months later he had his wife submit a form saying she was his employer ans he only made 1700 a month. And his support was greatly reduced. Because of this lower income the kids were put on Medicaid and he had to pay a portion of the amount he sent to the AG for support went to cover insurance with the state. This has gone on like this for many many years. I just found out recently from a financial sheet he turned in with family court that he is making 8k a month and has been for many years. Him and his wife have opened many business LLCs together based on her business she reported him an employee of. I have also paid half of any expenses the kids have as a single mother like braces and HS senior expenses. His wife continued to pay his support from her business account as if it was withholding from his pay. Ive learned she never issued him a W2 or 1099 as an employee or paid any employment taxes for him as her employee.

My question is, would the AG consider this fraud and do a recalculation because of this or would they just say to bad so sad?

This would literally be over 100k in unpaid support based on his actual income all these years and hes paid roughly 60k in child support for 2 kids in 10 years