You may be tempted to say: "Well, it was only this particular Judicial Committee and, had I sat before another group of elders, the answer could have been the other way." This line of reasoning would lead you to believe that the fault lies with the three men who sat as judges over you, rather than with the Jehovah's Witness religion. However, I implore you to reconsider.
Getting married is clearly an act of contrition; you took a definitive action to right the wrong. Furthermore, you did it in a very brief and hurried period of only 3 weeks! If you sincerely believe this, then consider the fact that the Jehovah's Witnesses as a whole don't. Otherwise, this would be mentioned in one of the endless religious materials that they produced in the last century. Thousands upon thousands of people lived the exact same scenario since the early days of that religion, and they never once took a proper stand, purposefully leaving it to the local elders. Hence, the religion as a whole is responsible for the disfellowshipping decision, not just the three elders.
Understanding this should lead you to reconsider your desire to join back into a religious group which clearly ignores the most important part of Jesus' teachings: Love and compassion. Consider all the speeches where Jesus denounced the pharisees for upholding the law to a fault and compare this to what just happened to you.
Actions are more important than beliefs. It is more important to show love than to believe in prophecies. It is more important to show compassion than to believe that the Holy spirit is not part of some trinity. It is more important to support one another than to go out preaching about doing these things. Case in hand, the Parable of the Two Sons in Matthew 21:28-32. You are judged by your actions, not by what you say!
JWs, like many other religions, tend to switch the narrative. To put importance on the beliefs rather than the actions. They feel the need to do this as this is what generally sets them apart from other groups. The truth is that love, compassion, kindness, empathy, etc., are things that can be found in individuals across all faiths. These are human traits, and this is where many believe that humans have been created in the likes of God; in these qualities. However, trying to keep the cohesion of their groups, many religions like the JWs, will uphold teachings above these Godly traits. This is precisely what Jesus was denouncing when he talked to the pharisees!
Finally, leaving the JW doesn't mean you need to leave Jehovah. JWs would want you to believe this, but in the end, if they are unable to practice the basis of Christian faith, than, staying with them will lead you further away from him. They become blinds leading blinds and all will fall into a pit. (Math 15:14).
I hope you the best and sincerely hope that you will take actions to stop further harm being done onto you by both religion and unfaithful mates.