''Telling the elders'', is only one of their control mechanisms. It's all a bunch of bull $shit, or politics. If God knows your whole heart, mind and soul, their is no need to have elders run your business.
On a side note, about elders committing past sins, transgressions. Yes, it is true. If an elder has indeed committed a past sin and 2 or 3 years has passed, then, and only then, only are ONLY elders excused from any judicial action or deletion of their appointments. The elder(s) who transgressed, can retain their title. So yes, elders are above the law, in a way.