Now that is one helluva experience! I'm sorry to hear that happened to you, but it sounds like you are better off and much the wiser for it.
Ah yes, the elders...I have seen quite a variety in my life from the totally clueless to the borderline psychotic and everything in between. Many play favorites, but it sounds as though your JC was pretty much standard procedure--anything hidden gets the dfing despite obvious repentance and improvement (I know, I know, total palm to forehead bs).
The part where they screamed at you and wouldn't listen reminded me of this:
2 Corin 2:7,8 (NWT) 7 now you should instead kindly forgive and comfort him, so that he may not be overwhelmed by excessive sadness. 8 I therefore exhort you to confirm your love for him.