Pete,
I can fill you in on the process and your options as well as the likely hood of success if you appeal. But I will need a little more info. You need to call the elder and ask what evidence was presented to the committee, who the witnesses were and what specifice thing you did are said that constitutes apostasy. He will probably will want another elder on the phone before saying anything to you, and will probably tell you to appeal the decision and the info will come out in the appeal. This you need to refuse because the appeal committee's approach is completely different from a regular judicial committee. You may have to agree to meet with a few of the committee members just to get this info. Then pass it on to me and we can talk more specifically.
Remind them that you were once and elder and therefore you know they MUST stick to WT Society procedure or they will be in big trouble with the society as well as potential legal trouble if they make any announcement based on improper procedure. You will have to be willing to play hard ball with them if you have any chance at all in this matter.
If you do get a real meeting, probably only with an appeal committee, unless they have solid testimony from two witnesses you may prevail with the "doubts" card. Tell them you don't know anything for sure, you just have DOUBTS. Remind them that you should not be treated harshly for doubts. And whatever you said or emailed to another was not to propagate false teachings but only to specify what your doubt was that has caused your week faith.
Do not answer their questions. They will lead you to make statements that will constitute apostasy. Just say you would rather not express your self if you know they are baiting you. Keep going back to the original evidence that lead to the charges and make them prove it was more than doubts. You might even ask them to explain the matter to you so your doubts will go away. Shut up and listen, no rebuttal, and hope to get out with you butt.
I served on appeal committees since the mid 1980's up untill about 1997, near the end about one every two months. Drove me crazy. Your chances are slim but by what you describe so far the boys have already made some mistakes. The appeal committee must consider this.
Hope to here more from you.
Jst2laws