@Ragman,
She's his ex for a reason too. My values are not theirs, but in a case like this,
I put the children first.
One question though: isn't child support based on the non-custodial parent's income alone?
Oh wait, every state has different guidelines. "In some states, child support calculation is based only on the income of the non – custodial parent. In other states both parent’s income is taken into consideration."
So, if his state calculates child support based only on his income, he has no leg to stand on.