'In order to extend mercy, the committee must be convinced that the wrongdoer has a changed heart condition and that he has a zeal to right the wrong and is absolutely determined to avoid it in the future.'
Shepherd the flock page 91
I remember this is one of the first things that concerned me as an elder because it seemed to sound like a person is guilty until proven innocent rather than 'love believes all things', especially given the word 'convinced' appears in bold.
Then in a training video one elder said something like 'unless we are convinced of repentance the shepherd the flock book says we must disfellowship'. That was the begining of the end for me as I thought surely true Christians would reason the other way round and show mercy wherever possible.