I have disabled Orespawn standard ore generation, vanilla nether ores still generate. There is no json to control them either, is this what is intended?

Currently yes, next version (for 1.9.4) will be able to use the orespawn library for vanilla generation.

Nether Metals MC 1.8.9 updated to version 1.1.1 now with a config file, I'm about to update the 1.9 branch

Config file added to the 1.9.x branch 97aa2a4 http://minecraft.curseforge.com/projects/nether-metals/files

Thanks for the unexpected quick turn around!

Just a quick note in the config, it has two Diamond options

general {
I:NetherCoalOreSpawnProb=0
I:NetherDIamondOreSpawnProb=0
I:NetherDiamondOreSpawnProb=0
I:NetherEmeraldOreSpawnProb=0
I:NetherGoldOreSpawnProb=0
I:NetherICoalOreSpawnProb=0
I:NetherIronOreSpawnProb=0
I:NetherLapisOreSpawnProb=0
I:NetherRedstoneOreSpawnProb=0
}

I noticed, I have been coding all day I might have missed something, It shouldn't affect anything tho. I'll clean that out before the next version

I just made a quick hotfix for it, reset your configs and install version 1.1.2

MinecraftModDevelopmentMods/EndMetals#1