Interesting ... your JW upbringing sounds so similar to mine ... mental hospitals and all!
Anyway ... I think you are right about there likely being a judicial committee formed over this. Since it has been so long, it will be just a formality. You can tell them what they want to hear, or you can be honest about how you feel about it. If you are honest, they may delve deeper into your personal doubts and it could get really nasty. If you tell them what they want to hear, they are likely to give you a slap on the wrist with "private reproof" ... but you would have to deal with the guilt of knowing you were not completely honest. Just deal with any guilt that might come (I wouldn't have any!) ... and preserve your personal dignity later.
In my opinion, judicial committees are a joke, a game, a kangaroo court. They are not worthy of you feeling any guilt about lying during any of them. Since you are considered a "weak" witness, they are likely to ask you how you feel about your relationship with Jehovah and what you plan to do to strengthen it, etc. etc. Just be ready for what you are going to say ... whether you decide to be completely honest or not. I had friends that fessed up to the elders about a year after they married and they just gave them both private reproof .
The only pitfall I see is your relationship with your wife. However you decide to handle the judicial meetings, be honest with your wife before hand. Don't have her be shocked by anything you say during the meetings. Since she already knows how you feel about the situation, let her know what your worries are. Tell her that you may not be "completely honest" about your feelings during the meetings to avoid any further action. Hopefully, you know your wife well enough to know how she will likely react.