Glofishy, I am sorry that you are having to go through this.
If I understand what you've said,
1. YOU are not a Witness and don't plan to ever be one
2. HE is not a Witness yet, since he is unbaptized
My advice: explain to your husband that you will not degrade yourself by lying for him to anyone, especially not the elders of the congregation he wishes to become part of, and CERTAINLY NOT to a judge.
If you divorce him before he is baptized, or if the process is started before he is baptized, the judicial committee of cheese & cracker men have no business getting involved.
If at some future date you decide to remarry him (WHY, for the love of god, WHY?) and he has been baptized, then his marriage plans are something the judicial committee would probably want to talk to him about, since it would evidence of "spiritual weakness" on his part to marry an unbeliever. There are plenty of controlling/neurotic/psychotic women in the Kingdom Hall for him to select from.
Divorce him, turn your back, and walk away. Find yourself someone who isn't a "fixer-upper."