Divorces usually begin with the process of "discovery", whereby each litigant is supposed to tell what assets they have under their control, own, or have spent if it is community property. As you are by now aware, lying is frequent and assets are hid, spent, not declared. or given away to new female friends in the form of diamonds.
Quite frequently, as you have also discovered, to your dismay, the taxes on the money are not given to your uncle (Sam)and his response is decidedly not avuncular.
A trial is the last resort after several attempts at mediation have failed. With yours approaching very quickly I am surprised to find you have not done some serious "forensic accounting".
The date of the sale and value of the stock should be part of your documentation along with a detailed "time line" of other dissipated assets. His deposition should have been taken long ago. Full files of all credit card charges, bank statements and brokerage accounts should be in your hands.
Perhaps there will be some relief for you from the IRS if you claim "innocent spouse". I am not sure. Whatever have you and your attorney been doing all this time to prepare for the trial? You both appear hopelessly inept.
Perhaps you had better ask for a continuance until you acquire all the financial records. If you can prove what you claim and there are sufficient assets remaing on his side of the ledger to compensate you for the theft then the judge will move them to your side.
Good luck. Start digging. You had better file separately for 2002.It appears you need a good accountant.