Don't tear him a new anything. Ask him/her "What can we do about making a case for squandering marital assets with his expenditures on X, Y and Z since (date)??" and "Help me understand why net worth is being used as the determination for support, rather than income? At a minimum, shouldn't BOTH be taken into account?"
I had the opposite problem. I had a very high income, but a very low net worth. And trust me, it was the INCOME that the court cared about.
