My inclination is to believe the best about people, sometimes to a fault, and to try to put things like this in the best light, but in this case I really struggle to do that. On the one hand, I doubt he actually meant that every person on the list has left their family, left the faith, or committed suicide. But, that's what he said. And it gives the impression that he believes that, for anyone on his list of whom that is not true, it's just a matter of time.
I think you're right that this is a list of people that he views as scandalizers, but isn't that part of the problem? If it was a list of people who clearly fit his description, the list would still be a problem, but I could understand the rationale for keeping it as a reminder not to be one who builds himself up by tearing others down. And a good number of the names I don't know. But how do Lane Keister and Carl Trueman make the list?
It seems that his definition of "scandalizer" includes people who speak out publicly against things that he supports? "Enemies list" might not quite be a fair description, since at least a couple of people on the list have had minimal interaction with him and haven't spoken directly against him, personally. But I can't think of any way to construe this as anything other than animosity toward his brothers and fellow elders without any reasonable cause.