Minetweaker back in 1.5.2 used to be able to add and remove IC2 machine recipes. Ore dictionary input support might not have worked, but everything else seemed to. Now, apparently due to API limitations, recipes can only be added to IC2 machines. Is there anyway you can add back in the ability to remove recipes in the API, so Minetweaker is able to?
Now, this might already be possible, if which is it I'll go bug the people who make Minetweaker. Or it may not be possible at all. Which sucks. But there's no way to find out without asking